LM Wind Power A/S

The present invention provides a wind turbine blade shell part for a wind turbine blade, the blade shell part comprising: a structural element providing structural strength to the blade shell part and comprising carbon fibres embedded in a polymer matrix; a lightning receptor exposed at an outer surface of the blade shell part and extending towards the structural element; and an electrically conductive adhesive attaching the lightning receptor to the structural element. A method for manufacturing such a blade shell part is also provided. (FIG. 8 C)

Disclosed is a mould system for moulding a blade shell of a wind turbine blade. The mould system comprises a first mould for manufacturing a first blade shell part of the wind turbine blade and a second mould for moulding a second blade shell part of the wind turbine blade. The first mould having a first moulding side with a first moulding surface that defines an outer shape of the first blade shell part. The second mould having a second moulding side with a second moulding surface that defines an outer shape of the second blade shell part. The mould system being configured to rotate and position the first mould such that the first moulding side is facing the second moulding side and such that the first blade shell part may be joined with the second blade shell part so as to form the blade shell of the wind turbine blade. The first mould comprises a first mould flange along at least a part of the periphery of the first moulding surface. The first mould flange being configured to provide a first shell part flange along at least a part of the periphery of the outer shape on the first blade shell part. The mould system comprises one or more fastening elements attachable to the first mould and being configured to secure the first blade shell part to the first mould during rotation and positioning of the first mould. The one or more fastening elements including a first fastening element being configured to secure the first blade shell part to the first mould at a first fastening position along the first mould flange. The mould system comprises a measurement arrangement comprising one or more measurement units including a first measurement unit. The measurement arrangement is configured to measure displacement of the first shell part flange relative to the first mould flange. The first measurement unit is configured to measure displacement of the first shell part flange relative to the first mould flange at a first measurement position along the first mould flange.

A method for joining rotor blade segments of a rotor blade includes placing a first blade segment in an assembly fixture. The assembly fixture has an outer carrier and at least one bladder arranged with the outer carrier. The first blade segment has an adhesive applied at one or more locations. The method also includes arranging the first blade segment with a second blade segment at at least one joint using the assembly fixture with the adhesive positioned at the at least one joint. Further, the method includes inflating the at least one bladder to provide pressure to the at least one joint, wherein the pressure causes the adhesive to displace between the first and second blade segments at the at least one joint, thereby securing the first and second blade segments together at the at least one joint. Moreover, the method includes maintaining the pressure via the at least one inflated bladder to allow the adhesive to cure, thereby securing the first and second blade segments together.

The present invention relates to a method of manufacturing a wind turbine blade ( 10 ). The method comprises arranging one or more shear webs ( 50, 55, 70 ) within a first shell half, adhesively joining the one or more shear webs to the first shell half, and adhesively joining the second shell half to the first shell half and to the one or more shear webs. The step of arranging the one or more shear webs within the first shell half comprises arranging at least one telescopic support member ( 80 ) between the inside surface ( 38 b ) of the first shell half ( 38 ) and the lateral surface ( 62 ) of at least one of the shear webs ( 70 ), wherein the telescopic support member ( 80 ) comprises an actuator ( 82 ) for adjusting the length of the telescopic support member.

Disclosed are a mould system and a clamping tong for securing a mould item part in a mould of a mould system. The clamping tong comprises: a primary tong segment comprising a primary clamping surface for applying clamping pressure on a clamping portion of a mould item part; a secondary tong segment coupled to the primary tong segment and comprising a secondary clamping surface for applying clamping pressure on a clamping portion of the mould. The clamping tong being configured to change between a clamping state and a release state, wherein the distance between the primary clamping surface and the secondary clamping surface in the clamping state is shorter than the distance between the primary clamping surface and the secondary clamping surface in the release state.

A method of manufacturing a composite part ( 70 ) for a wind turbine blade ( 10 ), the method comprising the steps of providing a mould ( 50 ) comprising a mould depression ( 51 ) with a floor surface ( 53 ) and an adjacent receiving section ( 54 ), and a mould inlay ( 60 ) having an insertion section ( 61 ) and a first side ( 63 ); arranging the insertion section ( 61 ) in the receiving section ( 54 ) of the mould depression ( 51 ) so that a junction of the first side ( 63 ) and the floor surface ( 53 ) forms a first mould edge ( 66 ); arranging a fibre material ( 74 ) on a moulding surface ( 52 ) adjacent to the junction and the first side ( 63 ); infusing the fibre material ( 74 ) with a resin ( 75 ) and curing the infused fibre material ( 74 ) to manufacture the composite part ( 70 ) having a first part edge ( 73 ) being formed by the junction, wherein the material of the first side ( 63 ) is chemically inert with the resin ( 75 ).

The present disclosure provides a method of applying a protective film on at least one portion of a wind turbine blade, a wind turbine blade, and an apparatus for forming a groove on a surface of at least one portion of a wind turbine blade. The method of applying a protective film on at least one portion of a wind turbine blade comprises providing the at least one portion of the wind turbine blade; forming a groove on a surface of the at least one portion of the wind turbine blade, thereby delimiting a first region of the surface of the at least one portion of the wind turbine blade from a second region of the surface of the at least one portion of the wind turbine blade, wherein the first region of the surface of the at least one portion of the wind turbine blade includes the groove; covering the first region of the surface of the at least one portion of the wind turbine blade with a protective film; and pressing an edge region of the protective film in the groove, thereby inserting the edge region of the protective film in the groove.

Disclosed is a wind turbine blade extending from a root end to a tip end, the wind turbine blade comprising a root region, and an airfoil region comprising the tip, a pressure side, a suction side and a chord extending between a leading edge and a trailing edge. The wind turbine blade comprises a leading edge protection element at the leading edge of the wind turbine blade. The leading edge protection element extends in a longitudinal direction between an outboard end and an inboard end and comprises a first section extending from the outboard end to a first section position, wherein the first section is made of a first erosion protection material having a first erosion resistance, and a second section extending from the first section position to a second section position, wherein the second section is made of a second erosion protective material having a second erosion resistance. The first erosion resistance is larger than the second erosion resistance.

The present disclosure relates to dampening of predominantly edgewise vibrations in a wind turbine blade. This is achieved by a wind turbine blade comprising one or more bump airfoil sections, each bump airfoil section being characterised in that for any airfoil within the bump airfoil section, the airfoil's pressure side profile y p has particular geometric properties near the trailing edge of the airfoil. Furthermore, a total length of all bump airfoil sections in the blade is at most 30% of the length of the blade, and at least half of the total length of all bump airfoil sections in the wind turbine blade is provided by one or more bump airfoil sections located spanwise in the outermost 30% of the blade.

The present disclosure relates to devices for wind turbine blades and methods for reducing vibrations in wind turbines with a rotor in standstill. A device comprises a portion configured to protrude beyond a leading edge of a wind turbine blade in a local chordwise direction. The portion configured to protrude beyond the leading edge is configured to at least partially form an air channel in front of the leading edge.