CN220522693U - Wind-powered electricity generation blade girder cap structure - Google Patents

Abstract

The utility model relates to the technical field of wind power blades, in particular to a wind power blade girder cap structure, which comprises: the beam cap body is provided with two mounting surfaces which are oppositely arranged, one surface of the beam cap body is connected with the inner wall of the shell of the leeward surface of the wind power blade, and the other surface of the beam cap body is provided with a connecting part arranged in the middle and reinforcing parts arranged at two sides of the connecting part; the reinforcing part extends along the length direction of the beam cap main body and is integrally formed with the beam cap main body, and the reinforcing part is arranged in a protruding mode in the thickness direction of the beam cap main body. According to the wind power blade, the structure of the girder cap is improved, the girder cap main body with two opposite mounting surfaces is arranged, one surface of the girder cap main body is connected with the inner wall of the leeward shell of the wind power blade, the other surface of the girder cap main body is provided with the connecting part and the reinforcing part, the reinforcing part extends along the length direction of the girder cap main body and is arranged in a protruding mode in the thickness direction of the girder cap main body, the reliability of the wind power blade is improved, the quality of the wind power blade is reduced, and meanwhile, the manufacturing cost of the wind power blade is reduced.

Description

Wind-powered electricity generation blade girder cap structure

Technical Field

The utility model relates to the technical field of wind power blades, in particular to a wind power blade girder cap structure.

Background

Wind power generators mainly rely on blades to capture wind energy, and the length of the blades directly influences the wind energy capturing capacity of a wind turbine generator set and the output power of the wind turbine generator set. With the improvement of the performance, the length of the blade is longer and longer, and with the increase of the length of the wind power blade, the gravity center of the wind power blade moves towards the tip of the blade, so that the gravity fatigue load and the centrifugal load are increased, and the performance of the wind power blade is affected.

In the prior art, as disclosed in chinese patent application publication No. CN112955648A, 6/11 of 2021, a wind turbine blade with multiple shear webs is provided to improve structural strength of a wind turbine blade by providing multiple shear webs between two spar caps of a wind turbine blade shell, and in order to improve support strength of the wind turbine blade spar caps, as shown in fig. 1, the thickness of the spar caps 01 is further thickened in the prior art.

However, when the inventor implements the scheme, the cost of the wind power blade can be increased and the development of the wind power blade is restrained when the main girder cap 01 in the structural form is paved by adopting carbon fibers.

Disclosure of Invention

In view of at least one of the above technical problems, the utility model provides a wind power blade girder cap structure, which adopts structural improvement to reduce wind power blade cost.

According to a first aspect of the present utility model, there is provided a wind turbine blade spar cap structure comprising: the beam cap body is provided with two mounting surfaces which are oppositely arranged, one surface of the beam cap body is connected with the inner wall of the shell of the leeward surface of the wind power blade, and the other surface of the beam cap body is provided with a connecting part arranged in the middle and reinforcing parts arranged at two sides of the connecting part; the reinforcing part extends along the length direction of the beam cap main body and is integrally formed with the beam cap main body, and the reinforcing part is arranged in a protruding mode in the thickness direction of the beam cap main body.

In some embodiments of the utility model, the reinforcement is of inverted T-shaped structure, comprising two co-linear flanges and a web vertically connected to the middle of the two flanges.

In some embodiments of the utility model, the web is hollow.

In some embodiments of the utility model, the web further has a flange thereon that is overmolded onto or integrally pultruded onto the free end of the web.

In some embodiments of the utility model, the flange is integrally pultruded over the free end of the web, and the flange is a hollow structure.

In some embodiments of the present utility model, the reinforcement portion has an i-shaped structure, and includes two parallel first transverse plates, two parallel second transverse plates, and two vertical plates with two ends perpendicularly connected to the middle portions of the two transverse plates.

In some embodiments of the utility model, both sides of the second transverse plate are also provided with side bending parts bending towards the direction of the first transverse plate.

In some embodiments of the utility model, the reinforcement is of inverted "J" shape and comprises a horizontal plate connected to the spar cap body, a vertical plate connected perpendicularly to the horizontal plate, and a bending plate connected perpendicularly to the free end of the vertical plate.

In some embodiments of the present utility model, the extending directions of the bending plates on two adjacent vertical plates are set toward each other.

In some embodiments of the utility model, the free end of the bending plate further has a lower bend bent towards the horizontal plate.

In some embodiments of the present utility model, the reinforcement portion is in an "Ω" shape, and includes an arc-shaped protrusion portion and an extension portion, where the extension portion is disposed on two sides of the arc-shaped protrusion portion, and bottom sides of the arc-shaped protrusion portion and the extension portion are connected to the beam cap body.

In some embodiments of the utility model, the arcuate projections are hollow.

In some embodiments of the present utility model, the reinforcement portion is in an inverted Y-shape, and includes a triangle connector, extension sides disposed on two sides of the triangle connector, and a T-shaped portion connected to a top of the triangle connector, where the triangle connector and the extension sides are connected to the beam cap body.

In some embodiments of the utility model, the triangular connector is hollow.

In some embodiments of the utility model, the hollow region of the triangular connector extends to the face of the spar cap body.

In some embodiments of the utility model, the hollow region is filled with a foam structure.

The beneficial effects of the utility model are as follows: according to the wind power blade, the structure of the girder cap is improved, the girder cap main body with two opposite mounting surfaces is arranged, one surface of the girder cap main body is connected with the inner wall of the leeward shell of the wind power blade, the other surface of the girder cap main body is provided with the connecting part and the reinforcing part, the reinforcing part extends along the length direction of the girder cap main body and is arranged in a protruding mode in the thickness direction of the girder cap main body, the reliability of the wind power blade is improved, the quality of the wind power blade is reduced, and meanwhile, the manufacturing cost of the wind power blade is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a conventional wind turbine blade in the background of the utility model;

FIG. 2 is a schematic view of a spar cap structure for a wind turbine blade in accordance with embodiments of the present utility model;

FIG. 3 is a schematic view of an inverted T-shaped spar cap structure in accordance with embodiments of the present utility model;

FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 3 according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a spar cap structure having a square flange in accordance with embodiments of the present utility model;

FIG. 6 is a schematic illustration of a spar cap structure having a circular flange in accordance with embodiments of the present utility model;

FIG. 7 is a schematic illustration of an integrally pultruded spar cap structure having a circular flange in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic structural view of an integrally pultruded spar cap structure having square flanges in accordance with an embodiment of the present utility model

FIG. 9 is a schematic illustration of a spar cap structure having a square hollow flange in accordance with embodiments of the present utility model;

FIG. 10 is a schematic illustration of a spar cap structure having a circular hollow flange in accordance with embodiments of the present utility model;

FIG. 11 is a schematic view of an I-shaped spar cap structure in accordance with embodiments of the present utility model;

FIG. 12 is an enlarged schematic view of the structure B in FIG. 11 according to an embodiment of the present utility model;

FIG. 13 is a schematic view of an embodiment of the present utility model wherein the I-shaped spar cap structure has side bends;

FIG. 14 is a schematic view of an inverted "J" shaped spar cap structure in accordance with embodiments of the present utility model;

FIG. 15 is an enlarged schematic view of the structure of FIG. 14C according to an embodiment of the present utility model;

FIG. 16 is a schematic view of an inverted "J" shaped spar cap structure having a kick-down portion in accordance with embodiments of the present utility model;

FIG. 17 is a schematic view of a spar cap structure having an "omega" shape in accordance with embodiments of the present utility model;

FIG. 18 is an enlarged schematic view of the structure shown at D in FIG. 17 according to an embodiment of the present utility model;

FIG. 19 is a schematic view of a hollow spar cap structure having an "omega" shape in accordance with embodiments of the present utility model;

FIG. 20 is a schematic view of an inverted Y-shaped spar cap structure in accordance with embodiments of the present utility model;

FIG. 21 is an enlarged schematic view of the structure at E in FIG. 20 according to an embodiment of the present utility model;

FIG. 22 is a schematic view of an inverted Y-shaped hollow spar cap structure in accordance with embodiments of the present utility model;

FIG. 23 is a schematic view of an inverted Y-shaped hollow spar cap structure in accordance with embodiments of the present utility model;

FIG. 24 is a schematic illustration of an inverted Y-shaped hollow spar cap structure filled foam structure in accordance with an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the prior art, the length of the wind power blade is longer and longer, and along with the continuous increase of the length, the gravity center moves towards the tip of the wind power blade, so that the gravity fatigue load and the centrifugal load can be increased, and the performance of the wind power blade is affected. In the prior art, in order to increase the strength of a wind turbine blade structure, a plurality of shear webs 122 are provided between two spar caps within a wind turbine blade shell, and the thickness of the spar caps is thickened, as shown in FIG. 1. However, the inventor finds that the weight of the whole wind power blade is increased when the scheme is implemented, and meanwhile, because the carbon fiber material is used, the cost is increased, and the development of the wind power blade is restrained. The inventor improves on this to reduce the weight of wind blades and reduce costs.

The wind power blade spar cap structure as illustrated in fig. 1-24, comprising: referring to fig. 2 specifically, the spar cap body 1 has two mounting surfaces disposed opposite to each other, one of the two surfaces is connected to the inner wall of the housing on the leeward side of the wind turbine blade, and the other surface has a connecting portion 11 disposed in the middle and reinforcing portions 12 disposed on both sides of the connecting portion 11; the reinforcing portion 12 extends in the longitudinal direction of the spar cap body 1 and is integrally formed with the spar cap body 1, and the reinforcing portion 12 is provided so as to protrude in the thickness direction of the spar cap body 1.

According to the utility model, through structural improvement of the girder cap, one side of the girder cap main body 1 with two opposite mounting surfaces is connected with the inner wall of the leeward shell of the wind power blade, the other side of the girder cap main body is provided with the connecting part 11 and the reinforcing part 12, and the reinforcing part 12 extends along the length direction of the girder cap main body 1 and is arranged in a protruding manner in the thickness direction of the girder cap main body 1, so that the reliability of the wind power blade is improved, the quality of the wind power blade is reduced, and meanwhile, the manufacturing cost of the wind power blade is reduced.

In some embodiments of the present utility model, the reinforcement 12 is an inverted T-shaped structure including two co-linear wings 121 and a web 122 perpendicularly connected to the middle of the wings 121. With continued reference to fig. 2, the wind power blade has a reinforcing portion 12 in a direction facing the inner side of the shell, the reinforcing portion 12 has an inverted T-shaped structure, the reinforcing portion 12 is divided into a wing plate 121 and a web plate 122, the web plate 122 is vertically connected in the middle, and the wing plate 121 is connected with the spar cap main body 1 at two sides of the web plate 122.

According to the inverted T-shaped arrangement of the reinforcing portion 12 described above, the web 122 is provided hollow. As shown in fig. 3 and 4, in the structure of the reinforcement 12, the middle portion of the web 122 is hollow, so that less manufacturing material is used without changing the bending strength and the compression resistance, and the weight of the structure is reduced.

Continuing with the inverted T-shape configuration of the reinforcement 12, the web 122 also has a flange 122a thereon, as shown in FIGS. 5-8, the flange 122a being overmolded onto the free end of the web 122 or integrally pultruded onto the free end of the web 122. In fig. 5 and 6, the flange 122a is bonded to the free end of the web 122, and the flange 122a is bonded to the free end of the web 122 in addition to the inverted T-shaped structure. With continued reference to fig. 7 and 8, the flange 122a may be formed by an integral pultrusion process to integrate the flange 122a with the reinforcing portion 12. The action of the flange 122a can enhance the bending strength and the compressive resistance of the reinforcing portion 12. It should be noted here that, in the present utility model, the shape of the flange 122a may be circular or square as shown in the drawings, or may be other triangular or polygonal shapes. It should also be noted that the bonding of the flange 122a to the free end of the web 122 may be performed by an acrylic glue-carbon fiber adhesive, an epoxy carbon fiber adhesive, or other adhesive.

By the above arrangement of the flange 122a, the flange 122a is integrally pultruded on the free end of the web 122, and the flange 122a is of hollow structure. By providing the flange 122a on the web 122 as described above, referring to fig. 9 and 10, the flange 122a is hollow-processed and processed by an integral pultrusion process without changing the bending resistance and compression resistance of the reinforcing portion 12. It should also be noted herein that the shape of the flange 122a may be circular or square as shown, or may be other triangular or polygonal shapes in the present utility model.

In some embodiments of the present utility model, the reinforcement 12 has an i-shaped structure, and includes two parallel first transverse plates 123, two second transverse plates 125, and two vertical plates 124 having two ends connected to the middle of the two transverse plates in a perpendicular manner. Referring to fig. 11 and 12, the reinforcement 12 is formed in an i-shape, in which a first cross plate 123 is connected to the wind turbine blade housing, a second cross plate 125 is disposed parallel to the first cross plate 123, and a vertical plate 124 is vertically connected between the middle portions thereof.

According to the reinforcement portion 12 having the above-described i-shaped structure, both sides of the second transverse plate 125 further have side bent portions 125a bent toward the first transverse plate 123. As shown in fig. 13, in addition to the above-described configuration of the i-shaped reinforcing portion 12, both ends of the second transverse plate 125 are bent in the direction of the first transverse plate 123 to form bent portions. By providing the side bent portions 125a on both sides of the second cross plate 125, the cap body 1 can be balanced, and the bending strength and the compression resistance of the reinforcing portion 12 can be enhanced.

In some embodiments of the present utility model, the reinforcement 12 has an inverted "J" shape structure including a horizontal plate 126 connected to the spar cap body 1, a vertical plate 127 vertically connected to the horizontal plate 126, and a bent plate 128 vertically connected to a free end of the vertical plate 127. As shown in fig. 14 and 15, a horizontal plate 126 is connected to the spar cap body 1, a vertical plate 127 is provided in the middle of the spar cap body 1 and is vertically connected, and the other end of the vertical plate 127 has a bending plate vertically connected to the vertical plate 127. The horizontal plate 126, the vertical plate 127 and the bending plate form an inverted "J" structure as shown in the figure, wherein the bending direction of the bending part can be directed to any position perpendicular to two sides of the vertical plate 127.

According to the above-described inverted "J" structure of the reinforcement portion 12, the extending directions of the bending plates 128 on two adjacent vertical plates 127 are set toward each other. With continued reference to fig. 14 and 15, the extending directions of the bending plates 128 on two adjacent vertical plates 127 are set toward each other, and the two bending plates disposed opposite to each other balance the forces under the action of gravity and shearing force, so as to enhance the bending strength and compression resistance of the reinforcing portion 12.

The reinforcing portion 12 having the inverted "J" structure is provided, and the free end of the bending plate 128 further has a bent-down portion 128a bent toward the horizontal plate 126. As shown in fig. 16, a lower bent portion 128a bent toward the horizontal plate 126 is provided at the free end of the bent plate of the inverted "J" shaped structural reinforcement 12. By providing the turndown portion 128a, the cap body 1 can be balanced, and the bending strength and the compression resistance of the reinforcing portion 12 can be enhanced.

In some embodiments of the present utility model, the reinforcement 12 is of an "Ω" type, and includes an arc-shaped protrusion 131 and an extension 132, as shown in fig. 17 to 19, the extension 132 being disposed at both sides of the arc-shaped protrusion 131, and the bottom sides of the arc-shaped protrusion 131 and the extension 132 being connected to the spar cap body 1. The web 122 is eliminated and the arc-shaped boss 131 is provided as the web 122. It should be noted that, in the present utility model, the cross section of the arc-shaped protrusion 131 may be circular, or may be elliptical or the like.

The reinforcement portion 12 is arranged in an omega-shape, and the arc-shaped protrusion portion 131 is arranged in a hollow shape. With continued reference to fig. 19, the arcuate projections 131 are hollowed without changing the bending resistance and compression resistance of the reinforcing portion 12 and are processed by an integral pultrusion process. It should be noted here that, in the present utility model, the cross-sectional shape of the arc-shaped convex portion 131 may be circular as shown in the drawing, or may be triangular or polygonal.

In some embodiments of the present utility model, the reinforcement portion 12 is in an inverted Y-shape, and includes a triangle connector 133, extension sides 134 disposed at both sides of the triangle connector 133, and a T-shaped portion 135 connected to the top of the triangle connector 133, where the triangle connector 133 and the extension sides 134 are connected to the spar cap body 1. Referring to fig. 20 to 22, the inverted Y-shaped reinforcing portion 12 mainly includes an extension 134 connected to the wind turbine blade shell, a triangular connector 133, and a T-shaped portion 135 on top of the triangular connector 133. The motor is reinforced by the triangular connector 133 and the extending edge 134, and then reinforced again by the T-shaped part 135 connected with the top.

The reinforcing portion 12 having the inverted Y shape in the above embodiment is provided, and the triangular connector 133 is provided in a hollow manner. With continued reference to fig. 22, the triangular connector is hollow and is fabricated by an integral pultrusion process without changing the bending resistance. It should be noted that, in the present utility model, the triangular connector 133 may have a triangular cross section, or may have other shapes such as a circle, a polygon, etc.

With respect to the reinforcing portion 12 in the inverted Y shape in the above embodiment, the hollow region of the triangular connector 133 extends to the surface of the spar cap main body 1. Referring to FIG. 23, one side of the triangle connector 133, which is connected to the spar cap, is eliminated and the other two sides are directly connected to the extension sides 134 on either side of the triangle connector 133 as a unit without changing the bending resistance.

For the reinforcing portion 12 in the inverted Y shape in the above embodiment, the hollow area is filled with the foam structure 133a. Referring to fig. 24 specifically, on the basis that the hollow area of the triangular connector 133 extends to the surface of the spar cap body 1, a foam structure 133a is added at the hollow position, so that the other two sides of the triangular connector 133 can be connected with the spar cap body 1 to play a supporting role. The shear force resistance of the inverted Y-shaped reinforcing part 12 structure is enhanced.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (16)

1. The wind power blade main beam cap structure is characterized by comprising a beam cap main body, wherein the beam cap main body is provided with two mounting surfaces which are oppositely arranged, one surface of the beam cap main body is connected with the inner wall of a shell of a leeward surface of a wind power blade, and the other surface of the beam cap main body is provided with a connecting part arranged in the middle and reinforcing parts arranged at two sides of the connecting part; the reinforcing part extends along the length direction of the beam cap main body and is integrally formed with the beam cap main body, and the reinforcing part is arranged in a protruding mode in the thickness direction of the beam cap main body.

2. The wind power blade girder cap structure according to claim 1, wherein the reinforcement portion is of an inverted T-shaped structure, and comprises two wing plates arranged in a collinear manner and a web plate vertically connected with the middle portions of the two wing plates.

3. The wind blade spar cap structure of claim 2, wherein the web is hollow.

4. A wind turbine blade spar cap structure as claimed in claim 2, wherein the web further comprises a flange, and wherein the flange is bonded to the free end of the web in a cladding manner or integrally pultruded to the free end of the web.

5. The wind blade spar cap structure of claim 4, wherein the flange is integrally pultruded over the free end of the web and the flange is a hollow structure.

6. The wind power blade girder cap structure according to claim 1, wherein the reinforcement portion is an i-shaped structure, and comprises two parallel first transverse plates, two parallel second transverse plates and two vertical plates with two ends vertically connected with the middle parts of the two transverse plates.

7. The wind turbine blade spar cap structure of claim 6, wherein both sides of the second cross plate further have side bends that bend toward the first cross plate.

8. The wind power blade girder cap structure according to claim 1, wherein the reinforcement portion is an inverted "J" structure, and comprises a horizontal plate connected with the girder cap body, a vertical plate vertically connected with the horizontal plate, and a bending plate vertically connected with a free end of the vertical plate.

9. The wind power blade spar cap structure of claim 8, wherein the extending directions of the bending plates on two adjacent vertical plates are set toward each other.

10. The wind blade spar cap structure of claim 8, wherein the free end of the bending plate further has a lower bend that bends toward the horizontal plate.

11. The wind power blade girder cap structure according to claim 1, wherein the reinforcing portion is omega-shaped and comprises an arc-shaped protruding portion and an extending portion, the extending portion is arranged on two sides of the arc-shaped protruding portion, and bottom sides of the arc-shaped protruding portion and the extending portion are connected with the girder cap main body.

12. The wind turbine blade spar cap structure of claim 11, wherein the arcuate projections are hollow.

13. The wind power blade girder cap structure according to claim 1, wherein the reinforcing part is in an inverted Y-shaped arrangement and comprises a triangular connecting body, extending edges arranged on two sides of the triangular connecting body and a T-shaped part connected with the top of the triangular connecting body, and the triangular connecting body and the extending edges are connected with the girder cap main body.

14. The wind turbine blade spar cap structure of claim 13, wherein the triangular connector is hollow.

15. The wind blade spar cap structure of claim 14, wherein the hollow region of the triangular connector extends to a surface of the spar cap body.

16. The wind blade spar cap structure of claim 15, wherein the hollow region is filled with a foam structure.