CN214660609U

CN214660609U - Wind power generation blade

Info

Publication number: CN214660609U
Application number: CN202121175134.9U
Authority: CN
Inventors: 张跃
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-09
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a wind power generation blade, includes the blade wing body, the blade wing body is formed by the concatenation of polylith core board, the core board is the plane board, be equipped with the web in the cavity of blade wing body, the tip of web is equipped with the beam cap. The utility model discloses still include another kind of wind-force wind-powered electricity generation blade. The blade wing body of the utility model is easier to manufacture, the manufacturing cost is greatly reduced, and the larger the blade volume is, the lighter the weight is compared with the existing arc-shaped blade wing; and the pneumatic efficiency is high, so that the wind energy utilization rate is improved.

Description

Wind power generation blade

Technical Field

The utility model relates to a wind-powered electricity generation blade, especially a wind power generation blade.

Background

The blade is one of key parts of the wind generating set, the blade is blown to rotate by taking the wind speed of natural wind as kinetic energy, and the generator is rotated to generate electric power by the kinetic energy of the rotation of the blade. The existing blade is usually made of glass fiber reinforced plastics and other materials, and the whole blade is formed by processing through a die, so that on one hand, the manufacturing process and die processing cost are high, and the blade shell needs to be designed into a curved surface, so that the design difficulty is high; on the other hand, the weight of the glass fiber reinforced plastic and other materials is large, and the size cannot be designed to be larger, namely the larger the volume of the blade is, the larger the weight of the blade made of the glass fiber reinforced plastic is; and when the glass fiber is waste, the glass fiber is not easy to degrade, and the glass fiber is harmful to human bodies.

In addition, in the existing blade shell, a conical pipe is usually arranged in the inner cavity of the shell to be used as a blade stem of a blade wing, so that the strength of the blade is increased. The tapered tube is difficult to manufacture, and the cost is high, because the curved surface structure is more difficult to manufacture than the plane structure. Moreover, the existing blade is easy to deform under the condition of large temperature difference.

Therefore, the utility model discloses need to design a blade of lightweight, easy preparation urgently, also can guarantee pneumatic efficiency simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough and providing a light in weight of prior art, easily preparation, simple structure, wind power generation blade that pneumatic efficiency is high.

The technical scheme of the utility model is that:

the utility model relates to a wind-force wind-powered electricity generation blade, including the blade wing body, the blade wing body is formed by the concatenation of polylith core, the core is the plane board, be equipped with the web in the cavity of blade wing body, the tip of web is equipped with the beam cap.

Furthermore, the number of the webs is 1-2.

Furthermore, the web is a core plate, a corrugated plate or a flat steel plate.

Furthermore, the upper end and the lower end of the web plate are both provided with the beam caps, and the beam caps are of arc-shaped or bent structures; an I-shaped beam structure or a cavity structure is formed between the web plate and the beam cap.

Further, the beam cap is arranged in the cavity of the blade wing body, or the beam cap and the blade wing body are arranged in parallel and level.

Further, an arc-shaped plate or the beam cap is arranged between the top end and the lower end of the adjacent core plates.

Furthermore, an arc-shaped plate is arranged between one side ends of the adjacent core plates, and an extended supplementary plate is arranged between the other side ends.

The utility model discloses another kind of wind-force wind-powered electricity generation blade, including the blade wing body, the blade wing body is formed by the concatenation of polylith core, the core is the plane board, the outside of blade wing body is equipped with the covering of arc structure, be equipped with the filling layer between covering and the blade wing body.

Furthermore, a web plate is arranged in the cavity of the blade wing body, and beam caps are arranged at the upper end and the lower end of the web plate and are directly connected with the core plate.

Further, the beam cap is of a planar structure.

The utility model has the advantages that: on one hand, the blade wing body is easier to manufacture, the manufacturing cost is greatly reduced, and the larger the blade volume is, the lighter the blade weight is compared with the existing arc-shaped blade wing by adopting the core plate; on the other hand, the web plate and the beam cap are arranged, so that the supporting strength of the blade wing body can be greatly improved, and when the web plate is arranged into a corrugated plate or a corrugated plate, the blades can be prevented from being deformed due to thermal difference; furthermore, the utility model discloses a set up the integrated configuration of blade wing body, covering and filling layer, can make the blade wing body change the preparation installation, and integrated configuration can improve wind energy utilization greatly and rate.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 3 is a sectional view taken along line A-A of embodiment 2 shown in FIG. 2;

fig. 4 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 5 is a sectional view taken along line B-B of embodiment 3 shown in FIG. 4;

fig. 6 is a schematic structural diagram of embodiment 4 of the present invention;

fig. 7 is a schematic structural diagram of embodiment 5 of the present invention;

fig. 8 is a schematic structural diagram of embodiment 6 of the present invention;

fig. 9 is a schematic structural diagram of embodiment 7 of the present invention;

fig. 10 is a schematic structural view of embodiment 8 of the present invention.

The attached drawings indicate the following:

1. a blade airfoil body; 2. a core board; 3. a web; 4. a spar cap; 5. an arc-shaped plate; 6. a convex portion; 7. covering a skin; 8. and (5) filling the layer.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1: the utility model provides a wind-force wind-powered electricity generation blade, includes blade wing body 1, and blade wing body 1 is formed by the concatenation of polylith core 2, and core 2 is the plane board, is equipped with web 3 in blade wing body 1's the cavity, and the tip of web 3 is equipped with beam cap 4.

In this embodiment, the core 2 includes an upper surface plate, a lower surface plate, and a sandwich layer disposed between the two surface plates, and the sandwich layer may be a corrugated structure, a honeycomb structure, or include a plurality of pipe bodies arranged at intervals, etc. Through designing into the leaf wing body core plate structure, can improve the lightweight greatly. The core plate is a plane plate, and is not designed into an arc-shaped structure like the existing blade, compared with the existing curved-surface blade, the core plate is easier to manufacture, and the manufacturing cost is greatly reduced.

In this embodiment, the vane body 1 is divided into a plurality of sections, and preferably, four core plates 2 are adopted for each section, and the four core plates 2 are obliquely arranged. The web plates 3 are core plates, the number of the web plates is one, and the upper end and the lower end of the web plates in the height direction are connected with beam caps 4 to form an I-beam structure. The spar caps 4 are preferably arc-shaped structures and are arranged flush with the blade wing body 1, namely the spar caps 4 are connected between the top ends and the lower ends of the adjacent core plates 2, and the spar caps 4 are fixedly connected with the upper panel and the lower panel of the core plates 2, so that the spar caps 4 are part of the blade wing body 1. The web 3 and the beam cap 4 are welded or screwed and fixed. An arc-shaped plate 5 is arranged between one side ends of the adjacent core plates 2, and an extended supplementary plate is arranged between the other side ends. For example: the side ends of adjacent core plates are not aligned but are connected in a staggered manner, the tail end of the extended core plate is provided with a supplementary plate, the supplementary plate is a convex part 6 with a pointed or arc-shaped structure, and by arranging the convex part 6, the pneumatic appearance factor is mainly considered, so that the pneumatic efficiency can be improved, and the noise can be reduced.

In this embodiment, the core plate 2 is made of stainless steel, so that the core plate is corrosion-resistant, low in maintenance cost, extremely long in service life, recyclable and good in environmental protection.

Through the web that sets up the core structure, can improve support strength, and web and blade wing body parallel and level set up, as the partly of blade wing body, both be convenient for be connected with the web, can guarantee the aerodynamic efficiency of blade wing body again.

Example 2

As shown in fig. 2 and 3: the difference from the embodiment 1 is that the web 3 is a corrugated plate, and the corrugated plate has an arc-shaped wave structure. Through setting up the buckled plate, can prevent that the blade wing body from producing deformation because of the thermal energy. For example, the front temperature of the blade wing body is higher than the back temperature of the blade wing body in the use process of wind power generation, so that the blade wing body is deformed due to thermal difference, and the problem can be solved through the expansion function of the corrugated plate.

Example 3

As shown in fig. 4 and 5: the difference with embodiment 2 lies in, web 3 is the corrugated sheet, and the cross-section of corrugated sheet is trapezoidal, and the deformation problem also can be solved to the corrugated sheet, and the corrugated sheet is compared the buckled plate moreover and is changeed manufacturing, manufacturing cost greatly reduced.

Example 4

As shown in fig. 6: the difference from example 1 is that the web 3 is a flat steel plate. The flat steel plate is easy to manufacture and low in cost.

Example 5

As shown in fig. 7: the difference from the embodiment 4 is that the spar caps 4 are arranged in the cavity of the blade wing body 1, the arc-shaped plates 5 are arranged between the top end and the lower end of the adjacent core plates 2, and the vertexes of the spar caps 4 are welded and fixed with the vertexes of the inner wall of the blade wing body 1. The beam cap 4 is arranged in the cavity of the blade wing body 1, so that the connection strength of the beam cap 4 can be improved.

Example 6

As shown in fig. 8: the difference from the embodiment 1 is that there are two webs 3, and the webs 3 are flat steel plates, and the two flat steel plates are connected with two ends of the spar cap 4, so that a cavity structure is enclosed between the webs 3 and the spar cap 4, that is, a hexagonal structure is formed. By providing two webs 3, the support strength can be further improved.

Example 7

As shown in fig. 9: the difference from embodiment 6 is that the spar cap 4 is provided within the cavity of the airfoil body 1.

Example 8

As shown in fig. 10: the utility model provides a wind-force wind-powered electricity generation blade, includes blade body 1, and blade body 1 is formed by the concatenation of polylith core 2, and core 2 is the plane board, and blade body 1's outside is equipped with skin 7 of arc structure, is equipped with filling layer 8 between skin 7 and the blade body 1.

This embodiment can make the whole arc structure that is of blade through skin 7 at the outside of blade wing body 1 plus one deck arc structure, and cross sectional shape is the drop form, not only makes simply, improves blade intensity, also can improve wind energy utilization and rate.

In this embodiment, the filling layer 8 is preferably made of foam or rock wool. Preferably, four core plates 2 are arranged at each section of the blade wing body 1, and two side ends of the adjacent core plates 2 can be directly connected without arranging an arc-shaped plate. The cavity of the blade wing body 1 is internally provided with a web plate 3, the upper end and the lower end of the web plate 3 are provided with beam caps 4, the beam caps 4 are preferably of a plane structure, and the top ends and the lower ends of the adjacent core plates 2 are directly connected with the beam caps 4 to form a hexagon-like structure. Because the arc-shaped skin 7 is arranged, arc-shaped plates do not need to be arranged among the core plates, and the core plates are simpler to connect.

In summary, on one hand, the blade wing body is easier to manufacture, the manufacturing cost is greatly reduced, and the larger the blade volume is, the lighter the blade weight is compared with the existing arc-shaped blade wing by adopting the core plate; on the other hand, the web plate and the beam cap are arranged, so that the supporting strength of the blade wing body can be greatly improved, and when the web plate is arranged into a corrugated plate or a corrugated plate, the blades can be prevented from being deformed due to thermal difference; furthermore, the utility model discloses a set up the integrated configuration of blade wing body, covering and filling layer, can make the blade wing body change the preparation installation, and integrated configuration can improve wind energy utilization greatly and rate.

Claims

1. The wind power generation blade comprises a blade wing body and is characterized in that the blade wing body is formed by splicing a plurality of core plates, the core plates are plane plates, a web plate is arranged in a cavity of the blade wing body, and a beam cap is arranged at the end part of the web plate.

2. The wind power blade according to claim 1, wherein the number of webs is 1-2.

3. Wind power blade according to claim 1 or 2, wherein the web is a core, corrugated or flat steel sheet.

4. The wind power generation blade according to claim 1 or 2, wherein the spar caps are arranged at both the upper end and the lower end of the web, and are of an arc-shaped or bent structure; an I-shaped beam structure or a cavity structure is formed between the web plate and the beam cap.

5. Wind turbine blade according to claim 1 or 2, wherein the spar cap is arranged in the cavity of the blade body or the spar cap is arranged flush with the blade body.

6. Wind turbine blade according to claim 1 or 2, wherein an arc-shaped plate or the spar cap is provided between the top and the bottom of the adjacent core plates.

7. The wind power blade according to claim 1 or 2, wherein an arc-shaped plate is arranged between one side ends of the adjacent core plates, and a patch plate is arranged between the other side ends of the adjacent core plates.

8. The wind power generation blade comprises a blade wing body and is characterized in that the blade wing body is formed by splicing a plurality of core plates, the core plates are plane plates, a skin of an arc-shaped structure is arranged outside the blade wing body, and a filling layer is arranged between the skin and the blade wing body.

9. The wind power blade according to claim 8 wherein the cavity of the airfoil body is provided with a web, and the upper and lower ends of the web are provided with spar caps, the spar caps being directly connected to the core.

10. The wind power blade of claim 9, wherein the spar cap is a planar structure.