Method for producing a composite structural part, composite structural part and wind power plant

Patent metadata

Field	Value
Publication number	US-2016195064-A1
Application number	US-201414909923-A
Country	US
Kind code	A1
Filing date	Aug 5, 2014
Priority date	Aug 5, 2013
Publication date	Jul 7, 2016
Grant date	—

Abstract

A production method and to a composite structural part, in particular for a wind power plant, with a multiplicity of at least two-component composite moldings, a first component being formed from a shaping core material and a second component being formed as part of a joining layer. According to the invention, the shaping core material is formed, in conformity with the shape of a prism, as a prismatic body with a polygonal basic area, a polygon of the basic area having a base and an angle to the base which amounts to between 30° and 60°, and a multiplicity of prismatic bodies are joined together, a functional orientation of the joining layers being formed at meeting legs, in such a way that the joining layer runs at an angle of 30°-60° to a base area of the prisms.

First claim

1 . A method comprising:
producing a composite structural part for a wind power plant, wherein the composite structural part includes a plurality of at least two component composite moldings, a first component being formed from a shaping core material and a second component being formed as part of a joining layer, wherein: the shaping core material is formed, in conformity with the shape of a prism, as a prismatic body with a polygonal basic area having a base and a side, wherein an angle between the side and the base is between 30° and 60°, and a plurality of the prismatic bodies are joined together, a functional orientation of the joining layers being formed at meeting surfaces, in such a way that the joining layer extends at an angle of between 30° and 60° to a base area of at least one of the prisms adjoining one another.

2 . The method according to claim 1 , wherein the angle to the base of the polygon lies at 45° within a variance of +/−10°.

3 . The method according to claim 1 , wherein a functional orientation of the joining layers is formed and extends at an angle of 45°, within a variance of +/−10° to the base area of the prisms.

4 . The method according to claim 1 , wherein the shaping core material is formed, in conformity with the shape of a cylindrical body, with a polygonal basic area.

5 . The method according to claim 1 , wherein the second component is formed in the shape of a mat, the mat being introduced between a first and a second prismatic body and being connected to the shaping core of the prismatic bodies.

6 . The method according to claim 1 , wherein the second component has a covering of the shaping core material, and has a functional orientation of fibers with an angle of 30°-60° to one another.

7 . The method according to claim 1 , wherein the shaping core material is made available by extrusion.

8 . The method according to claim 1 , wherein the shaping core material is joined into a prismatic body in the form of a three-dimensional polyhedron, the angle of the polyhedron faces amounting to 30°-60°.

9 . A composite structural part for a wind power plant, the composite structural part comprising:
a plurality of at least two-component composite moldings, a first component being formed from a shaping core material and a second component being formed as part of a joining layer, wherein: the shaping core material is formed, in conformity with the shape of a prism, as a prismatic body with a polygonal basic area, a polygon of the basic area having a base and an angle to the base that is between 30° and 60°, and a plurality of prismatic bodies are joined together, a functional orientation of the joining layers being formed at joining surfaces, in such a way that the joining layer runs at an angle of 30°-60° to a base area of at least one of the prisms adjoining one another.

10 . The composite structural part according to claim 9 , wherein the second component, as a covering of the shaping core material, has a functional orientation of fibers with an angle of 30°-60° to one another.

11 . The composite structural part according to claim 9 wherein:
at least one of the shaping core material and the functional orientation of the joining layers forms a sheet-like cross-sectional pattern of hexagons, and
joining surfaces are joined together in a sheet-like manner, of the functional orientation of the joining layers run at an angle of 30°-60° within a variance of +/−10° to a base area of the prisms, the base area being oriented parallel to the base of a hexagon.

12 . The composite structural part according to claim 9 , wherein the shaping core material contains at least one component of the group: acrylonitrile-butadiene-styrene, polyamides, polyacetate, polymethylmethacrylate, polycarbonate, polyethyleneterephthalate, polyethylene, polypropylene, polystyrene, polyetherketone and polyvinylchloride.

13 . The composite structural part according to claim 9 , wherein the composite structural part is joined together via the second component, by a thermoplastic matrix including a plurality of prismatic bodies, into a deformable structural part having comparatively increased shear resistance.

14 . The composite structural part according to claim 9 , wherein the shaping core material is reinforced by additional internal, functionally directed fibers.

15 . The composite structural part according to claim 9 , wherein the composite structural part is in the form of a sandwich structural part for a wind power plant, using a multiplicity of composite moldings to form a core structural part, wherein the core structural part is covered at least on one side by at least one covering layer.

16 . The composite structural part according to claim 9 , wherein the composite structural part is in the form of a rotor blade element for a rotor blade of a wind power plant, using a multiplicity of composite moldings to form a core structural part, wherein the core structural part is surrounded by at least one rotor blade covering layer.

17 . A wind power plant comprising:
a tower, a gondola, and a rotor with a rotor hub and a number of rotor blades, wherein at least one of the rotor blades, the tower, the gondola, the rotor hub has a composite structural part according to claim 1 .

18 . The method according to claim 8 , wherein the angle of the polyhedron faces is 45°, within a variance of +/−10°.

19 . A method comprising:
producing a composite structural part for a wind power plant, the composite structural part including at least two component composite moldings and a joining layer, the component composite moldings being formed from a shaping core material, wherein: the shaping core material is shaped as a prismatic body with a polygonal basic area having a base and a side, wherein an angle between the side and the base is between 30° and 60°, and the joining layers having joining surfaces at an angle of between 30° and 60° to a base area of at least one of the prisms adjoining one another.

Assignees

• Wobben Properties Gmbh

Inventors

• Hoffmann Alexander

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F03D11/04

  Mechanical Engineering · mapped topic

• F03D1/0691

  of the hub · CPC title

• F03D1/001

  Mechanical Engineering · mapped topic