Reinforced hollow for a wind turbine tower
View Patent ↗Reinforced hollow for a wind turbine tower comprising a lower ring ( 2 ) that determines an opening ( 3 ) for the installation of an access door (not represented) inside the tower ( 1 ). The hollow incorporates at least one structural element ( 4 ) that is fastened on both sides of the opening ( 3 ) of the tower's lower ring ( 2 ), providing the rigidness necessary to attach a door and permit the reduction of the thickness of the ring by 10-20%.
1. A reinforced hollow for a wind turbine tower that comprises a lower ring ( 2 ) that comprises an opening ( 3 ) for installing an access door inside the wind turbine tower,
wherein the reinforced hollow incorporates at least one structural element ( 4 ) that is fastened to the lower ring ( 2 ),
wherein the at least one structural element ( 4 ) comprises at least two beams, wherein at least two beams are mounted onto the lower ring ( 2 ) on opposite sides of the opening ( 3 ),
wherein the at least two beams are independent of the opening ( 3 ) and are not connected to the opening ( 3 ) such that the at least two beams are not a part of a frame for the opening ( 3 ), and
wherein the beams of the structural element ( 4 ) have upper ( 5 ) and lower ( 6 ) inclined ends.
2. The reinforced hollow for a wind turbine tower according to claim 1 , wherein the structural element ( 4 ) is welded to the ring ( 2 ).
3. The reinforced hollow for a wind turbine tower according to claim 1 , wherein the upper and lower inclined ends ( 5 , 6 ) of the beams of the structural element ( 4 ) are in a range of ¼ to ⅕.
4. The reinforced hollow for a wind turbine tower according to claim 1 , wherein access door hinges are fastened to the structural element ( 4 ) or to the lower ring ( 2 ) of the wind turbine tower.
5. The reinforced hollow for a wind turbine tower according to claim 1 , wherein the beams on the structural element ( 4 ) have a length (L) of 3-5 meters and a thickness (e) of 20-35 mm.
6. The reinforced hollow for a wind turbine tower according to claim 1 , wherein the structural element ( 4 ) can be fastened inside or outside the wind turbine tower.