CN217602834U

CN217602834U - Wind-powered electricity generation blade girder

Info

Publication number: CN217602834U
Application number: CN202222135122.4U
Authority: CN
Inventors: 谈源; 汤娟; 陈浩; 盛广智
Original assignee: Changzhou New Intelligent Technology Co Ltd
Current assignee: Changzhou New Intelligent Technology Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-10-18
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to a wind-powered electricity generation blade technical field especially relates to a wind-powered electricity generation blade girder, include: at least one group of structures and fillers; the length direction of the structure body is arranged along the length direction of the wind power blade, the structure body at least comprises an arc-shaped structure, and at least one through cavity arranged along the length direction of the structure body is formed inside the structure body; the outer surface of the filling body is adapted to the cavity and arranged in the cavity to fill the cavity. The utility model discloses a set up the cavity in the structure to set up the obturator and be located the cavity, have certain additional strengthening to the structure, the arc structure on the structure has higher mechanical properties for the plate structure, thereby under the prerequisite of guaranteeing overall connection performance and support performance, greatly reduced the holistic weight of wind-powered electricity generation blade girder, improved the convenience of transportation, also reduced the use amount of raw and other materials.

Description

Wind-powered electricity generation blade girder

Technical Field

The utility model relates to a wind-powered electricity generation blade technical field especially relates to a wind-powered electricity generation blade girder.

Background

Wind energy is one of the most important plates of new energy, and is currently greatly developed in various countries around the world, a wind power blade usually comprises an outer contour formed by an upper shell and a lower shell, the inner part of the wind power blade is supported by a main beam-web structure, reinforcing structural members such as a main beam and a web are important structures in a blade component, and the main beam is mainly manufactured by a method of stacking multiple layers of fiber fabrics and pouring resin for preforming.

However, as the wind generating set with a large wind wheel diameter becomes the mainstream technical trend in the wind power field, the increase of the length of the blade puts new requirements on the structural design and the manufacturing process of the blade; because the main beam materials in the structural form are stacked in a solid manner, the use amount of raw materials is inevitably increased, the production cost is improved, the integral weight of the wind power blade is greatly increased, and new problems are brought to transportation and installation; reducing the number of fibre fabric piles up the layer then can influence wind-powered electricity generation blade bulk connection and support performance at will, bring the potential safety hazard.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the utility model provides a wind-powered electricity generation blade girder has effectively solved the problem that points out among the background art.

In order to achieve the purpose, the utility model adopts the technical proposal that: a wind blade main beam comprising:

at least one group of structures and fillers;

the length direction of the structure body is arranged along the length direction of the wind power blade, the structure body at least comprises an arc-shaped structure, and at least one through cavity arranged along the length direction of the structure body is formed inside the structure body; the outer surface of the filling body is adapted to the cavity, is arranged in the cavity and is used for filling the cavity.

Furthermore, a partition plate is arranged between any two adjacent structural bodies, and the contact surface of each structural body and the partition plate is a plane.

Furthermore, a coating layer of carbon fiber is arranged on the outer side of the structure body, the coating layer is adaptive to the length of the structure body, and the coating layer is attached to the outer surface of the structure body in the length direction.

Furthermore, a plurality of structures that are equipped with the coating pass through the structural adhesive and connect, form the bonding body, and arbitrary protruding one side of the arc structure of structure all with adjacent the sunken one side of the arc structure of structure is laminated completely.

Further, the external side of bonding is equipped with the design layer of one deck carbon fiber, each all have on the coating with the laminating position on design layer.

Further, the structural body further comprises a plane structure, and the plane structure is located on one side of the concave part of the arc-shaped structure.

Further, the profile cross section of the cavity is circular.

Further, the profile cross-sections of the cavities are equal in size.

Furthermore, the profile cross section of the cavity is a polygon, and one side of the polygon is at least an arch.

Further, the structural body is made of PET foam.

The utility model has the advantages that: the utility model discloses a set up the cavity in the structure to set up the obturator and be located the cavity, have certain additional strengthening to the structure, the arc structure on the structure has higher mechanical properties for the plate structure, thereby under the prerequisite of guaranteeing overall connection performance and support performance, greatly reduced the holistic weight of wind-powered electricity generation blade girder, improved the convenience of transportation, also reduced the use amount of raw and other materials.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a main beam of a wind turbine blade according to an embodiment of the present invention and a combination process thereof;

fig. 2 is a schematic cross-sectional view of a main beam of a wind turbine blade according to a second embodiment of the present invention and a combination process thereof;

fig. 3 is a schematic cross-sectional view of a main beam of a three-stroke wind turbine blade according to an embodiment of the present invention and a combination process thereof;

fig. 4 is a schematic cross-sectional view of a four-stroke wind turbine blade main beam and a combination process thereof according to an embodiment of the present invention.

Reference numerals: 10. a structural body; 11. an arc-shaped structure; 12. a cavity; 13. a planar structure; 20. a filler; 30. a partition plate; 40. a coating layer; 50. an adhesive body; 60. and (6) a shaping layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It will be understood that when an element is referred to as being "secured 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 as used herein are for illustrative purposes only and do not represent the only embodiments.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example one

The wind blade main beam as shown in fig. 1 comprises:

at least one set of the structure 10 and the filler 20;

the length direction of the structural body 10 is arranged along the length direction of the wind power blade, the structural body at least comprises an arc-shaped structure 11, and at least one through cavity 12 arranged along the length direction of the structural body 10 is formed inside the structural body; the outer surface of the filling body 20 is adapted to the cavity 12 and is disposed in the cavity 12 to fill the cavity 12.

Through set up cavity 12 in structure 10 to set up the obturator 20 and be located cavity 12, have certain additional strengthening to structure 10, arc structure 11 on the structure 10 has higher mechanical properties for the plate structure, thereby under the prerequisite of guaranteeing overall connection performance and support performance, greatly reduced the holistic weight of wind-powered electricity generation blade girder, improved the convenience of transportation, also reduced the use amount of raw and other materials.

It should be noted here that the filling body 20 is a solid rod formed by processes such as pultrusion, which enhances the supporting and connecting strength, the outer surface of the filling body 20 is adapted to the cavity 12, and the gap where the filling body 20 and the cavity 12 are connected is bonded by structural adhesive, which enhances the connecting performance and prevents the filling body from falling out of the cavity 12; the structural body 10 is made of a light material with good mechanical properties, so that the weight of the main beam is greatly reduced while the supporting performance of the main beam is ensured, and preferably, the structural body 10 is made of a PET (polyethylene terephthalate) foam material.

The structural body 10 can further comprise a plane structure 13, the plane structure 13 is located on one side of the arc structure 11, a semi-arc sealing area is formed, and when the arc structure 11 is extruded, certain reinforcing effect is achieved on stress at two ends of the arc structure 11, so that the overall mechanical performance of the structural body 10 is improved.

According to the cross-sectional profile form of the cavity 12, the profile cross section of the cavity 12 can be set to be circular, the diameter of the circle can be set according to the outer profile of the structural body 10, on the premise that the structural form and the overall weight of the structural body 10 are not influenced, the cross-sectional profile is as close to the edge profile of the structural body 10 as possible, and the cross-sectional profile has high supporting and connecting strength; or the diameters of the circles can be set to be equal to form a plurality of cavities 12 with equal volumes, the cavities are uniformly distributed in the structural body 10 to ensure the distribution uniformity of the filling bodies 20 and form a uniform main beam structure, the filling bodies 20 are more easily manufactured in the mode, and only the long circular rods with equal diameters need to be formed.

Certainly, the profile section of the cavity 12 may also be a polygonal structure, and one side of the polygon is at least an arch, and one side of the arch is opposite to one side of the structure 10 where the arc structure 11 is located, so that a certain supporting effect is provided for the stress of the arc structure 11, and the overall mechanical performance of the main beam is improved.

Example two

On the basis of the structure of the above embodiment, as shown in fig. 2, a coating layer 40 of carbon fiber is disposed on the outer side of the structure 10, the coating layer 40 is adapted to the length of the structure 10, and is attached to the outer surface of the structure 10 in the length direction to wrap the structure 10 along the length direction, so as to have a certain external reinforcing effect on the structure 10, thereby enhancing the overall mechanical properties of the main beam.

EXAMPLE III

On the basis of the structure of the embodiment, as shown in fig. 3, a separation plate 30 is arranged between any two adjacent structural bodies 10, the contact surfaces of the structural bodies 10 and the separation plate 30 are planes, the separation plate 30 and the structural bodies 10 are bonded to form an integrated structure, meanwhile, a coating layer 40 of one layer of carbon fiber is arranged on the outer side of the integrated structure, after the coating layer 40 is arranged, the reinforcing effect is formed on the whole inner part and the whole outer part of the main beam, so that under the condition that the structure of the section of the main beam is large, the connecting position between the structural bodies 10 is reinforced to a certain extent, and the integral connection and support performance of the wind power blade is ensured.

The separation plate 30 can be made of carbon fibers through pultrusion and other processes, the thickness of each portion of the separation plate 30 is even, the contact surface with the separation plate 30 is a plane, and the separation plate 30 can be better attached to the separation plate.

Example four

On the basis of the second structure of the above embodiment, as shown in fig. 4, the plurality of structural bodies 10 provided with the coating layers 40 are connected by structural adhesive to form the bonding body 50, and the convex side of the arc-shaped structure 11 of any structural body 10 is completely attached to the concave side of the arc-shaped structure 11 of the adjacent structural body 10, and when the cross-sectional structure of the main beam is large, the structural bodies 10 provided with the plurality of coating layers 40 are connected by structural adhesive to form the bonding body 50, so that a local reinforcing effect of each part is obtained, and the overall mechanical property of the main beam is ensured.

Meanwhile, the shaping layer 60 of one layer of carbon fiber is arranged on the outer side of the bonding body 50, the bonding position of each coating layer 40 with the shaping layer 60 is arranged, and the shaping layer 60 and the bonding body 50 are completely filled with carbon fiber structures, so that the appearance of the bonding body 50 can reach the appearance structure required by the main beam, and meanwhile, the separation phenomenon between the structural bodies 10 is avoided.

It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a wind-powered electricity generation blade girder, with wind-powered electricity generation blade shell fixed connection, its characterized in that includes:

at least one group of structures and fillers;

the length direction of the structure body is arranged along the length direction of the wind power blade, the structure body at least comprises an arc-shaped structure, and at least one through cavity arranged along the length direction of the structure body is formed inside the structure body; the outer surface of the filling body is adapted to the cavity, is arranged in the cavity and fills the cavity.

2. The wind power blade girder according to claim 1, wherein a partition plate is arranged between any two adjacent structures, and a contact surface between each structure and the partition plate is a plane.

3. The wind power blade girder according to claim 1 or 2, wherein a coating layer of carbon fiber is provided on the outer side of the structure, and the coating layer is adapted to the length of the structure and attached to the outer surface of the structure in the length direction.

4. The wind power blade girder of claim 3, wherein a plurality of structures provided with the coating layer are connected by structural adhesive to form an adhesive body, and the convex side of the arc-shaped structure of any one structure is completely attached to the concave side of the arc-shaped structure of the adjacent structure.

5. The wind power blade girder of claim 4, wherein a shaping layer of carbon fiber is arranged on the outer side of the bonding body, and each coating layer is provided with a bonding position with the shaping layer.

6. The wind blade main beam of claim 1, wherein the structure further comprises a planar structure located on one side of the arc-shaped structure depression.

7. The wind blade main beam of claim 6 wherein the cavity is circular in profile cross-section.

8. The wind blade spar of claim 7 wherein the cavities have profile cross-sections of equal size.

9. The wind blade main beam of claim 6, wherein the cavity has a polygonal cross-section in profile, and wherein one side of the polygon is at least arcuate.

10. The wind blade girder according to claim 1, wherein the structure is made of PET foam.