Temporary web support for wind turbine blade rotating device
Provided herein is a shear web support for wind turbine blade. Particularly, the present disclosure provides a frangible shear web support element that is designed to fail under certain specific conditions. The frangible support(s) enhance the structural rigidity of the shear web, allow for one-step mold closures, and rupture or disconnect once a predetermined condition (e.g. load threshold, load orientation/vector) is applied to the support element.
1. A wind turbine blade apparatus, comprising:
a blade, comprising:
a first blade half, the first blade half including a first spar cap;
a second blade half, the second blade half including a second spar cap;
a shear web coupled to at least the first spar cap;
a first mount attached to the shear web;
a second mount attached to the second blade half; and
a support having a first leg coupled to the first mount, and a second leg coupled to the second mount,
wherein the support includes a frangible portion configured to fail under a predefined condition.
2. The apparatus of claim 1 , wherein the first mount is rigidly attached to the shear web.
3. The apparatus of claim 1 , wherein the second mount is rigidly attached to the second blade half.
4. The apparatus of claim 1 , wherein the first leg is pivotably attached to the first mount to permit relative movement therebetween.
5. The apparatus of claim 1 , wherein the second leg is pivotably attached to the second mount to permit relative movement therebetween.
6. The apparatus of claim 1 , wherein the second mount is attached to the second blade half at a position spaced from the second spar cap.
7. The apparatus of claim 1 , wherein a frangible connection is disposed between the first and second leg.
8. The apparatus of claim 7 , wherein the first and second leg have a first material composition, and the frangible connection has a second material composition.
9. The apparatus of claim 1 , wherein the frangible portion is disposed at the connection of the first leg and the first mount.
10. The apparatus of claim 1 , wherein the frangible portion is disposed at the connection of the second leg and the second mount.
11. The apparatus of claim 1 , wherein the first mount is located at a position between approximately 25%-75% of a height of the shear web.
12. A method of assembling a wind turbine blade comprising:
providing a first blade half;
providing a second blade half;
providing a shear web, the shear web coupled to the second blade half;
attaching a first mount to the shear web;
attaching a second mount to the second blade half;
coupling a frangible support to the first mount and the second mount;
triggering the frangible support to fail.
13. The method of claim 11 , wherein the frangible support includes a first leg pivotably coupled to the first mount, a second leg pivotably connected to the second mount, and a connection portion disposed between the first and second leg.
14. The method of claim 13 , wherein triggering the frangible support to fail includes rupturing the connection portion.
15. The method of claim 13 , wherein triggering the frangible support to fail includes detaching the connection portion.
16. The method of claim 13 , wherein triggering the frangible support to fail includes displacing the connection portion.
17. The method of claim 13 , wherein triggering the frangible support to fail includes operating a release mechanism disposed outside of the blade halves.
18. The method of claim 11 , wherein triggering the frangible support to fail includes positioning the second blade half on top of the first blade half.
19. The method of claim 11 , further comprising removing at least a portion of the frangible support from the assembled blade.
20. The method of claim 11 , further comprising providing first and second frangible support members, the first frangible support member disposed on a first side of the shear web, and the second frangible support disposed on a second side of the shear web.