CN215979681U

CN215979681U - Sectional type wind-powered electricity generation blade that structure is succinct

Info

Publication number: CN215979681U
Application number: CN202122358684.0U
Authority: CN
Inventors: 谈源; 周敏杰; 汤娟; 解恩泽; 常忠伟
Original assignee: Changzhou New Intelligent Technology Co Ltd
Current assignee: Changzhou New Intelligent Technology Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-08
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to the technical field of wind power blades, in particular to a sectional type wind power blade with a simple structure; the blade comprises a blade root section and a blade tip section which are both of composite material structures with cavities in the middle; the blade root section and the blade tip section are spliced to form a whole blade; the first connecting plate is L-shaped in cross section, and one side of the first connecting plate is fixedly arranged at one end of the blade root section facing the blade tip section; the cross section of the second connecting plate is L-shaped, and one side of the second connecting plate is fixedly arranged at one end of the blade tip section, which faces the blade root section; the fastener is used for fixedly connecting the other side of the first connecting plate and the other side of the second connecting plate; wherein, the one end circumference that the blade root segmentation was towards the apex segmentation is provided with the lug, and the apex segmentation is provided with the recess towards the one end circumference of blade root segmentation, and the lug stretches into in the recess. The utility model aims to provide a sectional type wind power blade with a simple structure aiming at the defects in the prior art, so that the weight of the wind power blade is reduced, and the difficulty in production and installation is reduced.

Description

Sectional type wind-powered electricity generation blade that structure is succinct

Technical Field

The utility model relates to the technical field of wind power blades, in particular to a sectional type wind power blade with a simple structure.

Background

Wind energy is pollution-free energy, and China has a large number of coastal islands, grassland pasturing areas, mountain areas, plateau zones and other areas with rich wind energy resources, so that the construction of wind power projects is greatly accelerated, and the method has important significance for adjusting energy structures and changing economic development modes in China.

In the existing wind power generator, in order to ensure the strength of the blade, the blade is generally made of metal, and in order to facilitate the transportation of the blade, the blade is made to be a sectional type. However, the blades made of metal are too heavy and inconvenient to install and use, and meanwhile, in order to ensure the connection reliability between the blade segments, a complicated connection structure needs to be designed, so that the use reliability of the blades is low, and the blades are inconvenient to produce and install.

In view of the above problems, the designer designs a sectional type wind power blade with a simple structure based on practical experience and professional knowledge which are abundant for years in engineering application of such products and by cooperating with the application of theory, so that the weight of the wind power blade is reduced, and the difficulty of production and installation is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sectional type wind power blade with a simple structure aiming at the defects in the prior art, and solves the problems that the sectional type wind power blade made of metal in the prior art is too heavy, low in use reliability and inconvenient to produce and install.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the method comprises the following steps: the blade root section and the blade tip section are both of composite material structures with cavities in the middle; the blade root section and the blade tip section are spliced to form a whole blade;

the first connecting plate is L-shaped in cross section, and one side of the first connecting plate is fixedly arranged at one end, facing the blade tip section, of the blade root section;

the cross section of the second connecting plate is L-shaped, and one side of the second connecting plate is fixedly arranged at one end, facing the blade root section, of the blade tip section;

the fastener is used for fixedly connecting the other side of the first connecting plate and the other side of the second connecting plate;

the blade root segment is provided with a convex block towards one end of the blade tip segment in the circumferential direction, the blade tip segment is provided with a groove towards one end of the blade root segment in the circumferential direction, and the convex block extends into the groove.

Furthermore, a plurality of first webs arranged along the vertical direction are arranged in the cavity of the blade root section, and a plurality of second webs arranged along the vertical direction are arranged in the cavity of the blade tip section.

Further, one end of the first web plate and/or the second web plate is provided with an opening.

Further, the first connecting plate and the second connecting plate are provided with a plurality of reinforcing plates.

Furthermore, a first thickened section is circumferentially arranged at one end of the blade root section, and the first connecting plate is arranged at the first thickened section; one end of the tip segment is circumferentially provided with a second thickened section, and the second connecting plate is arranged at the second thickened section.

Further, a pre-buried metal sleeve or a pre-buried metal block is arranged in the first thickened section and the second thickened section.

Furthermore, a structural adhesive layer is arranged between the surfaces, which are mutually attached to the convex blocks and the grooves.

Furthermore, the reinforced screw is inserted into the second connecting plate and the side face of the groove in sequence and screwed into the bump.

Through the technical scheme of the utility model, the following technical effects can be realized:

the designed sectional type wind power blade with a concise structure replaces the traditional metal material with the composite material with high strength and lighter weight, and the blade root section and the blade tip section are both set to be of a structure with a cavity in the middle, so that the weight of the blade is further reduced, the stress at the joint of the blade root section and the blade tip section is reduced, the blade root section and the blade tip section are enabled to pass through a fastener, the connection can be completed through the first connecting plate and the second connecting plate, and the reliable connection strength is reached, so that the overall structure of the blade is simplified, and the production and the installation are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 diagram of a sectional type wind power blade with a simple structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of a sectional type wind turbine blade with a simple structure according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at B in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken at C of FIG. 3 in an embodiment of the present invention;

reference numerals: the blade root section 1, the bump 11, the first web 12, the first thickened section 13, the blade tip section 2, the groove 21, the second web 22, the second thickened section 23, the first connecting plate 3, the second connecting plate 4 and the reinforcing screw 5.

Detailed Description

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

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

A simple-structured sectional type wind power blade is shown in FIGS. 1 to 5, and comprises:

the blade root section 1 and the blade tip section 2 are both of composite material structures with cavities in the middle; the blade root section 1 and the blade tip section 2 are spliced to form a whole blade; the first connecting plate 3 is L-shaped in cross section, and one side of the first connecting plate is fixedly arranged at one end, facing the blade tip section 2, of the blade root section 1; the section of the second connecting plate 4 is L-shaped, and one side of the second connecting plate is fixedly arranged at one end, facing the blade root section 1, of the blade tip section 2; a fastener for fixedly connecting the other side of the first connecting plate 3 and the other side of the second connecting plate 4; wherein, the one end circumference that blade root segmentation 1 faced blade tip segmentation 2 is provided with lug 11, and blade tip segmentation 2 is provided with recess 21 towards the one end circumference of blade root segmentation 1, and lug 11 stretches into in the recess 21.

Specifically, the carbon fiber composite material with high strength and lighter weight is used for replacing the traditional metal material to manufacture the blade root segment 1 and the blade tip segment 2 of the segmented wind power blade, for example, glass fibers, carbon fibers or carbon-glass mixed composite materials are adopted, the blade root segment 1 and the blade tip segment 2 are both arranged into structures with cavities in the middle, the weight of the blade is further reduced, the stress at the joint of the blade root segment 1 and the blade tip segment 2 is reduced, the connection of the blade root segment 1 and the blade tip segment 2 can be completed through fasteners, the first connecting plate 3 and the second connecting plate 4, and reliable connection strength is achieved, so that the overall structure of the blade is simplified, and the production and installation are facilitated. The cooperation of lug 11 and recess 21 can make the mutual block of circumference of blade root segmentation 1 and apex segmentation 2, guarantees the alignment of blade root segmentation 1 and apex segmentation 2 to preferably set up the structure glue film between the face that lug 11 and recess 21 laminated each other, can also reduce the rigidity sudden change of junction when playing the sealed effect.

In order to enhance the structural strength of the blade root segment 1 and the blade tip segment 2, as shown in fig. 2 to 5, a plurality of first webs 12 arranged in the vertical direction are arranged in the cavity of the blade root segment 1, and a plurality of second webs 22 arranged in the vertical direction are arranged in the cavity of the blade tip segment 2. Preferably, an opening is provided at one end of the first and/or

second webs

12, 22, through which a person can pass from one side to the other side during installation without having to detour from the outside, facilitating the operation of the person.

In order to strengthen the structural strength of the first connecting plate 3 and the second connecting plate 4, as shown in fig. 2-5, the first connecting plate 3 and the second connecting plate 4 are both provided with a plurality of reinforcing plates, and the reinforcing plates and two side surfaces of the first connecting plate 3 and the second connecting plate 4 are perpendicular to each other, so that the deformation of the first connecting plate 3 and the second connecting plate 4 is effectively avoided.

In order to strengthen the connection strength between the first connecting plate 3 and the blade root segment 1, and between the second connecting plate 4 and the blade tip segment 2, as shown in fig. 3-5, a first thickened section 13 is circumferentially arranged at one end of the blade root segment 1, and the first connecting plate 3 is arranged at the first thickened section 13; one end of the blade tip subsection 2 is circumferentially provided with a second thickened section 23, and the second connecting plate 4 is arranged at the second thickened section 23. Due to the special properties of the composite material, the strength of the composite material structure is easily damaged by processing the cured composite material structure, and the processing procedures are increased, so preferably, a pre-buried metal screw sleeve or a pre-buried metal block is arranged in the first thickened section 13 and the second thickened section 23, the pre-buried metal screw sleeve or the pre-buried metal block is laid together with the blade root segment 1 and the blade tip segment 2, and can be directly integrated with the blade root segment 1 and the blade tip segment 2 after curing and forming for connecting with connecting pieces used for fixing the first connecting plate 3 and the blade root segment 1, and the second connecting plate 4 and the blade tip segment 2.

As a preferable option for further improving the structural strength of the joint, as shown in fig. 4, a reinforcing screw 5 is further included, and the reinforcing screw 5 is inserted through the second connecting plate 4 and the side surface of the groove 21 in sequence and screwed into the protrusion 11.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a succinct sectional type wind-powered electricity generation blade of structure which characterized in that includes:

the blade root section (1) and the blade tip section (2) are both of composite material structures with cavities in the middle; the blade root section (1) and the blade tip section (2) are spliced to form a whole blade;

the cross section of the first connecting plate (3) is L-shaped, and one side of the first connecting plate is fixedly arranged at one end, facing the blade tip section (2), of the blade root section (1);

the section of the second connecting plate (4) is L-shaped, and one side of the second connecting plate is fixedly installed at one end, facing the blade root section (1), of the blade tip section (2);

the fastener is used for fixedly connecting the other side of the first connecting plate (3) and the other side of the second connecting plate (4);

the blade tip is characterized in that a protruding block (11) is arranged at one end, facing the blade tip section (2), of the blade root section (1) in the circumferential direction, a groove (21) is arranged at one end, facing the blade root section (1), of the blade tip section (2) in the circumferential direction, and the protruding block (11) extends into the groove (21).

2. The structurally compact segmented wind turbine blade according to claim 1, wherein the blade root segment (1) has a plurality of first webs (12) arranged in a vertical direction in the cavity, and the blade tip segment (2) has a plurality of second webs (22) arranged in a vertical direction in the cavity.

3. Structurally compact segmented wind turbine blade according to claim 2, wherein one end of the first and/or second webs (12, 22) is provided with an opening.

4. Structurally compact segmented wind power blade according to claim 1, characterized in that the first connection plate (3) and the second connection plate (4) are each provided with several reinforcement plates.

5. The structurally compact segmented wind power blade according to claim 1, characterized in that one end of the blade root segment (1) is circumferentially provided with a first thickened section (13), and the first connecting plate (3) is provided at the first thickened section (13); one end of the blade tip subsection (2) is circumferentially provided with a second thickened section (23), and the second connecting plate (4) is arranged at the second thickened section (23).

6. The structurally simple segmented wind power blade according to claim 5, wherein a pre-buried metal sleeve or a pre-buried metal block is arranged in the first thickened section (13) and the second thickened section (23).

7. The structurally simple segmented wind power blade according to claim 1, wherein a structural adhesive layer is arranged between the mutually attached surfaces of the projection (11) and the groove (21).

8. The structurally simple segmented wind power blade according to claim 1, further comprising a reinforcing screw (5), wherein the reinforcing screw (5) sequentially penetrates through the second connecting plate (4) and the side surface of the groove (21) and is screwed into the projection (11).