Method of beam cap connection for lengthening wind turbine generator blades
A technology for wind turbines and connection methods, which is applied to wind turbine components, wind engines, and wind power generation, and can solve problems such as reducing the clearance between blades and towers, stress concentration at the bonding interface, and increasing the risk of blades hitting the tower. Achieve the effects of avoiding the risk of beating the tower, improving the bonding interface, and optimizing the stiffness distribution
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Embodiment 1
[0045] Step 1: Prefabrication of the reserved area of the existing blade spar cap
[0046] 1a. If figure 1 As shown, the identification of the cutting and grinding area of the existing blade, referring to the structure and process requirements of the lengthened wind power blade, identifies the lengthened connecting surface 4, the reserved area of the existing blade spar cap 6-1, and the grinding and bonding area of the blade tip shell 10;
[0047] 1b. For the grinding of the reserved area 6-1 of the existing blade spar cap, the grinding process shall be carried out with reference to the marking line of 1a. In the staggered transition zone of the blade spar cap 5, the single-layer staggered distance in the transition zone is greater than 100mm, the grinding width is the same as the width of the existing blade spar cap glass fiber layup, and the grinding thickness is the same as the existing spar cap glass fiber layup at the 4 extended joints thickness;
[0048] 1...
Embodiment 2
[0065] Step 1: Prefabrication of the reserved area of the existing blade spar cap
[0066] 1a. Marking of the cutting and grinding area of the existing blades. Referring to the structure and process requirements of the lengthened wind power blades, mark the lengthened connecting surface 4, the reserved area of the beam cap of the existing blade 6-1, and the grinding and bonding area of the blade tip shell 10 ;
[0067] 1b. For the grinding of the reserved area 6-1 of the existing blade spar cap, the grinding process shall be carried out with reference to the marking line of 1a. In the staggered transition zone of the blade spar cap 5, the single-layer staggered distance in the transition zone is greater than 100mm, the grinding width is the same as the width of the existing blade spar cap glass fiber layup, and the grinding thickness is the same as the existing spar cap glass fiber layup at the 4 extended joints thickness;
[0068] 1c. Grinding of the bonding area 1...
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