Pre-kitted infusion package including vacuum bag with built-in infusion channels and consumables
Devices, systems, and methods of improving manufacture of a composite wind turbine blade are provided to reduce cure time, and minimize consumable waste. After layup of a plurality of fiber panels along a blade mold, a pre-kitted vacuum bag can unrolled and overlaid on top of the fabric panels. The vacuum bag includes a plurality of fluid channels within the bag which have a pre-formed spring element embedded therein to allow for distribution a flowable resin to permeate the fiber panels and form a fiber-reinforced structural component, e.g. wind turbine blade.
1. An apparatus for forming a composite wind turbine blade comprising:
a plurality of fiber panels disposed in a first turbine blade half;
a plurality of fiber panels disposed in a second turbine blade half;
a first vacuum bag disposed above the first turbine blade half; the first vacuum bag includes a first series of fluid channels, at least a portion of the fluid channels having a first spring element disposed therein; and
a second vacuum bag disposed above the second turbine blade half; the second vacuum bag includes a second series of fluid channels, at least a portion of the fluid channels having a second spring element disposed therein;
the first spring elements disposed within the channels and fixedly attached to the first vacuum bag, and
the second spring elements disposed within channels and fixedly attached to the second vacuum bag.
2. The apparatus of claim 1 , wherein at least one fluid channel extends along the entire span of the blade.
3. The apparatus of claim 1 , wherein at least one fluid channel extends from a leading edge to a trailing edge of the blade.
4. The apparatus of claim 1 , wherein the fluid channels of at least one of the first and second bag are distributed in a uniform pattern about a surface of the blade.
5. The apparatus of claim 1 , wherein a first region of the blade has a first number of fluid channels and a second region of the blade has a second number of fluid channels.
6. The apparatus of claim 5 , wherein the first region is the root region of the blade and the second region is the tip region of the blade.
7. The apparatus of claim 1 , wherein the fluid channels are configured with a uniform cross section.
8. The apparatus of claim 1 , wherein an inlet fluid channel of the first vacuum bag is configured with a greater diameter than a fluidly coupled distribution channel.
9. The apparatus of claim 1 , wherein the fluid channels are configured for unidirectional flow.
10. The apparatus of claim 1 , wherein the fluid channels include at least one closure mechanism to maintain the respective spring element within the channel.
11. The apparatus of claim 10 , wherein the fluid channels include two closure mechanisms, the respective spring element disposed between the closure mechanisms.
12. The apparatus of claim 1 , wherein at least one fluid channel circumscribes the respective spring element.
13. The apparatus of claim 1 , wherein at least one fluid channel is an enclosed conduit having an inner diameter, the respective spring element contacting an inner surface of the fluid channel at diametrically opposed locations.
14. The apparatus of claim 1 , wherein at least one spring element includes a pair of parallel rods.
15. The apparatus of claim 14 , wherein the at least one spring element includes undulating arcs extending from the parallel rods.