Method for manufacturing a structural component of a blade segment for a rotor blade of a wind turbine
A method for manufacturing a structural component of a blade segment for a segmented rotor blade of a wind turbine includes providing a mold of the structural component. The mold has an outer wall that defines an outer surface of the structural component. The method also includes securing at least one tooling pin to the outer wall for defining a pin joint slot in the structural component. Further, the method includes laying up one or more outer fiber layers in the mold so as to at least partially cover the outer wall. The outer fiber layer(s) has at least one hole that receives the tooling pin(s). As such, the outer fiber layer(s) form the outer surface of the structural component. Moreover, the method includes placing one or more structural features atop the outer fiber layer(s) in the mold. In addition, the method includes infusing the outer fiber layer(s) and the structural feature(s) together via a resin material so as to form the structural component.
1. A method for manufacturing a structural component of a blade segment for a segmented rotor blade of a wind turbine, the method comprising:
providing a mold of the structural component, the mold having an outer wall that defines an outer surface of the structural component;
securing at least one tooling pin to the outer wall for defining a pin joint slot in the structural component;
laying up one or more outer fiber layers in the mold so as to at least partially cover the outer wall, the one or more outer fiber layers having at least one hole that receives the at least one tooling pin, the one or more outer fiber layers forming the outer surface of the structural component;
placing one or more structural features atop the one or more outer fiber layers in the mold; and,
infusing the one or more outer fiber layers and the one or more structural features together via a resin material so as to form the structural component,
wherein placing the one or more structural features atop the one or more outer fiber layers in the mold further comprises placing one or more shear webs atop the one or more outer fiber layers, the one or more shear webs comprising a web hole that receives the at least one tooling pin.
2. The method of claim 1 , wherein the structural component comprises at least one of a beam structure or a receiving section of the blade segment.
3. The method of claim 2 , wherein placing the one or more structural features atop the one or more outer fiber layers in the mold further comprises placing a first layer of one or more pultrusions atop the one or more outer fiber layers.
4. The method of claim 1 , further comprising placing one or more bushings to the outer wall within the mold and securing the at least one tooling pin within the one or more bushings.
5. The method of claim 2 , wherein securing the at least one tooling pin to the outer wall for defining the pin joint slot in the beam structure further comprises securing a single tooling pin from a leading edge end of the mold to a trailing edge end of the mold.
6. The method of claim 3 , wherein securing the at least one tooling pin to the outer wall for defining the pin joint slot in the beam structure further comprises securing a leading edge tooling pin at a leading edge end of the mold and securing a separate trailing edge tooling pin at a trailing edge end of the mold, the leading and trailing edge tooling pins being coaxially aligned in a chord-wise direction of the beam structure.
7. The method of claim 6 , wherein placing the one or more shear webs atop the one or more outer fiber layers and the first layer of one or more pultrusions further comprises placing at least one leading edge shear web at the leading edge end of the mold such that a leading edge hole of the at least one leading edge shear web receives the leading edge tooling pin and placing a trailing edge shear web at the trailing edge end of the mold such that a trailing edge hole of the at least one trailing edge shear web receives the trailing edge tooling pin.
8. The method of claim 6 , further comprising placing one or more inner fiber layers so as to cover the one or more shear webs and the first layer of one or more pultrusions.
9. The method of claim 8 , further comprising placing at least one mandrel atop the one or more inner fiber layers so as to provide a base shape for shaping the structural component thereon, the mandrel comprising a compressible material.
10. The method of claim 9 , further comprising folding ends of the one or more inner fiber layers around the at least one mandrel.
11. The method of claim 10 , wherein placing the one or more structural features atop the one or more outer fiber layers in the mold further comprises placing a second layer of one or more pultrusions atop the folded ends of the one or more inner fiber layers.
12. The method of claim 11 , further comprising folding ends of the one or more outer fiber layers around the second layer of the one or more pultrusions.
13. The method of claim 1 , wherein the mold comprises a first mold portion and a second mold portion, the method further comprising placing the second mold portion atop the first mold portion that contains the one or more outer fiber layers and the one or more structural features and subsequently infusing the one or more outer fiber layers and the one or more structural features together so as to form the structural component.
14. The method of claim 6 , further comprising removing the leading edge tooling pin and the trailing edge tooling pin, after infusing the one or more outer fiber layers and the one or more structural features together to partially form the pin joint slot.
15. A molding kit for manufacturing a beam structure of a blade segment for a segmented rotor blade of a wind turbine, the kit comprising:
a first mold portion comprising an outer wall that defines an outer surface of the beam structure;
at least one tooling pin secured to the outer wall for defining a pin joint slot in the beam structure; and,
a second mold portion configured to fit with the first mold portion after one or more materials are placed therein to form the beam structure so as to create a vacuum that can draw a resin material within the first and second mold portions for infusing the one or more materials together,
wherein the at least one tooling pin further comprises a leading edge tooling pin and a trailing edge tooling pin.
16. The molding kit of claim 15 , wherein the one or more materials comprise at least one of one or more outer fiber layers, one or more layers of pultrusions, one or more shear webs, or one or more inner fiber layers, and wherein the resin material comprises at least one of a thermoset resin or a thermoplastic resin.
17. The molding kit of claim 15 , wherein at least one of the one or more materials comprise a pre-cut hole that receives the at least one tooling pin when placed into the first mold portion.
18. The molding kit of claim 15 , further comprising one or more bushings for securing to the outer wall within the first mold portion.