CN211692704U

CN211692704U - Wind driven generator blade and wind driven generator comprising same

Info

Publication number: CN211692704U
Application number: CN202020010303.2U
Authority: CN
Inventors: 赵静; 潘磊; 刘伟超
Original assignee: Guodian United Power Technology Co Ltd
Current assignee: Guodian United Power Technology Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-10-16
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a aerogenerator blade reaches aerogenerator including it belongs to the wind turbine generator system field, including girder and the core of being connected with the girder, girder and core are unsmooth the connection. The utility model discloses a girder and/or trailing edge roof beam adopt unsmooth contact mode of being connected with the core, improve the stability of blade structure. The problem of among the prior art core and girder make this junction become the weak point of structure and easily receive the damage because of perpendicular butt joint mode is solved. The utility model provides a contact mode of unsmooth connection can improve this partial region's stability to make the blade structure more stable.

Description

Wind driven generator blade and wind driven generator comprising same

Technical Field

The utility model relates to a wind turbine generator system field especially relates to a aerogenerator blade reaches aerogenerator including it.

Background

The power generation tends to be large-scale, and the larger the wind power blade is, the higher the requirement on the structural stability of the wind power blade is also provided. Due to the fact that the large-sized blade is large in size and heavy in self weight, the rear edge is easily damaged due to the fact that a hoisting scheme is not good, and the damaged position is usually the area where the core material is connected with the rear edge beam. The larger the blade is, the wider the blade main beam is, so that when the main beam is too wide, buckling instability in the plane is easy to occur, and the damaged area is usually the joint of the main beam and the core material.

It follows that the existing contact pattern is not conducive to the structural stability of the large blade. Therefore, the utility model discloses a novel connection mode.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural stability that can improve wind-powered electricity generation blade, guarantee blade stable safe moving aerogenerator blade reaches including it for a long time.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

on the one hand, the utility model provides a wind driven generator blade, include girder and the core of being connected with the girder, girder and core are unsmooth connection.

Furthermore, the two ends of the main beam are convex sharp angles, and the joint of the core material and the main beam is a groove matched with the convex sharp angles. Further, the slope of the oblique angle of the convex angle is less than 1: 5.

Furthermore, grooves are formed in two ends of the main beam, and convex angles matched with the grooves are arranged at the connecting position of the core material and the main beam. Further, the lobes are beveled with a bevel efficiency of less than 1: 5.

Further, the gap between the main beam and the core material is filled with dry yarns.

Further, the main beams and the core materials are sequentially laid on the blade shell and integrally poured and formed.

Furthermore, the core material structure further comprises a rear edge beam, and the rear edge beam is in concave-convex connection with the core material.

Furthermore, two ends of the rear edge beam are provided with convex sharp angles, and the joint of the core material and the rear edge beam is provided with a groove matched with the convex sharp angles.

Furthermore, grooves are formed in two ends of the rear edge beam, and convex angles matched with the grooves are arranged at the connecting position of the core material and the rear edge beam.

In another aspect, a wind power generator is provided, which comprises the wind power generator blade.

After adopting such design, the utility model discloses following advantage has at least:

(1) the utility model discloses a girder and/or trailing edge roof beam adopt unsmooth contact mode of being connected with the core, improve the stability of blade structure. The problem of among the prior art core and girder make this junction become the weak point of structure and easily receive the damage because of perpendicular butt joint mode is solved. The utility model provides a contact mode of unsmooth connection can improve this partial region's stability to make the blade structure more stable.

(2) The utility model provides a new contact form-concave-convex connection between the core material and the main beam and the trailing edge beam aiming at the weak point of the current wind power blade structure, which can improve the rigidity of the joint area between the core material and the main beam and the trailing edge beam; the damage probability of the joint area of the core material and the main beam and the rear edge beam is reduced; the stability of wind-powered electricity generation blade structure and the factor of safety of fan operation are improved.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Fig. 1 is a schematic structural view of an embodiment of a connection mode of a main beam and a core material of a wind turbine blade according to the present invention;

fig. 2 is a schematic structural view of another embodiment of a connection mode of a main beam and a core material of a wind turbine blade according to the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood by those within the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The utility model provides an embodiment of aerogenerator blade, as shown in fig. 1, 2, including girder 1 (or 1 ') and core 2 (or 2 ') of being connected with girder 1 (or 1 '), girder 1 (or 1 ') and core 2 (or 2 ') are unsmooth connection.

When the utility model is used, the main beam and the core material are in concave-convex connection, which can improve the rigidity of the joint area of the core material and the main beam; the damage probability of the joint area of the core material and the main beam is reduced; the stability of wind-powered electricity generation blade structure and the factor of safety of fan operation are improved. The problem of among the prior art core and girder make this junction become the structure weak point and easily receive the damage because of perpendicular butt joint mode has been solved, the utility model discloses a contact mode of unsmooth connection can improve this partial region's stability to make the blade structure more stable.

In the prior art, the connection mode of the core material, the main beam and the rear edge beam in the large blade is generally vertical butt joint, so that the connection part becomes a weak point of the structure and also generally becomes an area which is easy to be damaged.

The utility model provides a new contact form-concave-convex connection between the core material and the main beam and the trailing edge beam aiming at the weak point of the current wind power blade structure, which can improve the rigidity of the joint area between the core material and the main beam and the trailing edge beam; the damage probability of the joint area of the core material and the main beam and the rear edge beam is reduced; the stability of wind-powered electricity generation blade structure and the factor of safety of fan operation are improved.

Preferably, the trailing edge beam is also connected with the core material in a concave-convex mode.

If a gap exists between the main beam and the core material or a gap exists between the rear edge beam and the core material, the gap can be filled with dry yarns. The main beam and the core material, the rear edge beam and the core material are sequentially laid on the blade shell and integrally poured and formed.

The concave-convex connection is generally implemented as follows: the main beam and the trailing edge beam are prefabricated into specific boundary shapes (which can be sharp angles or convex angles), the core material is cut into matched boundary shapes at oblique angles, the boundary shapes are sequentially laid in the blade shell, if gaps exist, the boundary shapes can be filled with dry yarns, and then the boundary shapes are integrally formed in an infusion mode.

As an example, as shown in fig. 1, two ends of the main beam 1 may be convex corners, and the joint of the core material 2 and the main beam 1 is a groove matched with the convex corners. Further, the slope of the bevel angle of the pointed angle is less than 1: 5. The slope may be referenced to DNV-GL2015 blade design specifications.

Correspondingly, the two ends of the rear edge beam can also be provided with convex sharp corners, and the joint of the core material and the rear edge beam is provided with a groove matched with the convex sharp corners.

As another embodiment, grooves are formed at two ends of the main beam 1 ', and convex angles matched with the grooves are formed at the joint of the core material 2 ' and the main beam 1 '. Further, the lobes are beveled, the efficiency of the beveling being less than 1: 5. The slope may be referenced to DNV-GL2015 blade design specifications.

Correspondingly, two ends of the rear edge beam can also be provided with grooves, and the joint of the core material and the rear edge beam is provided with a convex angle matched with the grooves.

The concave-convex connection method of the main beam and the core material and the concave-convex connection method of the trailing edge beam and the core material are not limited to the concave-convex connection method described above, and for example, a zigzag concave-convex connection method or the like is used.

The utility model discloses a girder and/or trailing edge roof beam adopt unsmooth contact mode of being connected with the core, improve the stability of blade structure. The problem of among the prior art core and girder make this junction become the weak point of structure and easily receive the damage because of perpendicular butt joint mode is solved. The utility model provides a contact mode of unsmooth connection can improve this partial region's stability to make the blade structure more stable.

The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.

Claims

1. A wind driven generator blade comprises a main beam and a core material connected with the main beam, and is characterized in that the main beam and the core material are in concave-convex connection.

2. The wind turbine blade according to claim 1, wherein the two ends of the main beam are convex tip angles, and the joint of the core material and the main beam is a groove matched with the convex tip angles.

3. A wind turbine blade according to claim 2, wherein the pitch angle slope of the pointing angle is less than 1: 5.

4. The wind turbine blade of claim 1, wherein grooves are formed in two ends of the main beam, and the joint of the core material and the main beam is a convex angle matched with the grooves.

5. The wind turbine blade of claim 4, wherein the lobes are beveled, the beveling being less than 1:5 efficient.

6. The wind turbine blade of claim 1, wherein a gap between the main beam and the core material is filled with dry yarn.

7. The wind turbine blade of any one of claims 1 to 6, wherein the main beams and the core material are sequentially laid on the blade shell and integrally poured.

8. The wind turbine blade of any of claims 1 to 6, further comprising a trailing edge beam, wherein the trailing edge beam is in a male-female connection with the core material.

9. The wind turbine blade as recited in claim 8, wherein the trailing edge beam has a nose angle at each end, and the joint between the core material and the trailing edge beam is a groove matching the nose angle;

or grooves are formed in two ends of the rear edge beam, and convex angles matched with the grooves are arranged at the connecting position of the core material and the rear edge beam.

10. A wind power generator comprising a wind power generator blade according to any of claims 1 to 9.