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1. WO2020114565 - PROCÉDÉ DE FABRICATION DE CORPS DE PALE D’ÉOLIENNE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

1 . A wind turbine blade body manufacturing method, the method comprising the steps of: providing a mould (40) having an elongated mould surface (43),

placing a movable insert (50) on the mould surface, in a first position,

forming, with the insert in the first position, a first blade body having a first length (L1 ), placing the insert (50) on the mould surface, in a second position, and

forming, with the insert in the second position, a second blade body having a second length (L2) which is different from the first length.

2. A method according to claim 1 , wherein the mould surface (43) extends from a mould root end (41 ) to a mould tip end (42), and comprises a portion presenting a constant cross-section, wherein the steps of placing the insert (50), in the first and second positions, comprises placing the insert (50) with a proximal end (51 ) thereof facing toward the mould root end (41 ), and placing the proximal end (51 ) within the constant cross-section portion.

3. A method according to claim 2, wherein the proximal end (51 ) has a shape which is substantially the same as the cross-sectional shape of the constant cross-section portion.

4. A method according to any one of the preceding claims, wherein a difference, at the first position and at the second position, of the orientation of the insert (50) around a longitudinal axis of the mould surface (43), is linearly dependent on the distance between the first position and the second position.

5. A method according to any one of the preceding claims, wherein a difference, at the first position and at the second position, of the orientation of the insert (50) around a lateral axis of the mould surface (43), is linearly dependent on the distance between the first position and the second position.

6. A method according to any one of the preceding claims, wherein the steps of placing the insert (50), in the first and second positions, comprises fixing the insert (50) in a lateral direction of the mould surface, by means of a mechanical locking arrangement (53) extending along at least one of opposite longitudinal edges of the mould surface.

7. A method according to claim 6, wherein fixing the insert (50) comprises placing the insert (50) so as to partly cover the locking arrangement, wherein a cover device (55) is placed to cover a part of the locking arrangement not covered by the insert.

8. A method according to any one of the preceding claims, wherein the insert (50) presents an insert tip end (142) for forming a tip of the first and second blade bodies.

9. A method according to any one of the preceding claims, further comprising: selecting the lengths of the first and second blade bodies based on required lengths of respective blades for a first wind turbine and a second wind turbine, and selecting the first and second positions to form the first and second blade bodies with the selected lengths.

10. A wind turbine blade installation method, comprising mounting on a first wind turbine in a wind farm, a first blade comprising the first blade body formed in the method according to any one of the preceding claims, and mounting on a second wind turbine in the wind farm, a second blade comprising the second blade body formed in the method according to any one of the preceding claims.

1 1 . A wind farm comprising a first wind turbine comprising a first blade comprising the first blade body formed in the method according to any one of claims 1 -9, the wind farm further comprising a second wind turbine comprising a second blade comprising the second blade body formed in the method according to any one of claims 1 -9.

12. A wind turbine blade body manufacturing apparatus comprising:

a mould (40), having an elongated mould surface (43) extending from a mould root end (41 ) to a mould tip end (42),

and a movable insert (50), the apparatus being arranged to allow the insert to be placed on the mould surface, in a plurality of positions along the longitudinal direction of the mould surface, for forming blade bodies having respective lengths which are dependent on the insert position along the longitudinal direction of the mould surface.

13. An apparatus according to claim 12, wherein the mould surface (43) comprises a portion presenting a constant cross-section.

14. An apparatus according to claim 13, wherein the insert (50) comprises a proximal end (51 ) arranged to face toward the mould root end (41 ) and a distal end (52) arranged to face away from the mould root end, the proximal end having a shape which is substantially the same as the cross-sectional shape of the constant cross-section portion.

15. An apparatus according to any one of claims 13-14, wherein, in the constant cross-

section portion, a twist of the mould surface changes linearly in the longitudinal direction of the mould surface.

16. An apparatus according to any one of claims 13-15, wherein at least a part of the mould surface (43) is curved in the longitudinal direction so as to provide a longitudinal bend on the blade bodies, the curvature of the mould surface being constant in the constant cross-section portion.

17. An apparatus according to any one of claims 13-16, wherein the mould (40) presents, at the constant cross-section portion, a mechanical locking arrangement along at least one of opposite longitudinal edges of the mould surface, for fixing the insert (50) in a lateral direction of the mould surface.

18. An apparatus according to claim 17, wherein the insert (50) is arranged to partly cover the locking arrangement, the apparatus further comprising a cover device (55) arranged to cover a part of the locking arrangement not covered by the insert.

19. A wind turbine blade body manufacturing method, comprising forming a blade body with an apparatus according to any one of claims 12-18, and with the insert (50) in one of the plurality of positions.

20. A method according to claim 19, wherein the blade body has a length within 90-100%, preferably 95-100%, of the length of the longest blade body that can be formed in the apparatus.