WO2014067125A1

WO2014067125A1 - Blade and wind-driven generator

Info

Publication number: WO2014067125A1
Application number: PCT/CN2012/083949
Authority: WO
Inventors: 王忠成
Original assignee: 广飞科技股份有限公司
Priority date: 2012-11-02
Filing date: 2012-11-02
Publication date: 2014-05-08

Abstract

A wind-driven generator, which is provided with multiple blades (1), wherein a blade is provided with a pair of integrally formed fixing seats (20) and a pair of flow guide plates (12) configured at two ends of the blade. Arrangement of the fixing seats can reduce possible damage to the blades caused by a configuration of a lock with a locking through hole, avoid looseness of and damage to a connection point caused by multiple times of shaking, and extend a service life of the blades and wind-driven generator. The flow guides can enable the wind-driven generator to rotate stably.

Description

Blades and wind turbines

Technical field

The present invention relates to a blade structure, and more particularly to a vertical wind blade formed by integrally molding a polymer material. Background technique

In recent years, wind energy is still one of the most environmentally friendly and pollution-free energy sources. According to the WWEA World Wind Energy Association 2009 report, compared with 2008, 38,312 MW in 2009, the total output value reached 159,213 MW, a growth rate of 31.7%. , the highest since 2001, almost doubled in three years. In addition, according to the statistics of the GWEC Global Wind Energy Committee, the number of new wind power installations in China and the United States increased by 106% and 19% respectively in 2008, and the newly added volume reached 22.9GW, accounting for 60% of the global market. Both economies are paying more and more attention to the use of wind energy as a green energy source.

The process of wind power generation uses the aerodynamic force of the wind turbine blades to generate lift, which is used to drive the rotor to rotate, and then transmit through the shaft system to drive the generator to generate electricity. Generally, wind turbines for wind power generation can be distinguished from vertical axis and horizontal axis by appearance. For example: One of the known vertical-axis wind turbines is of the Savonius type, which produces the resistance of the blades to rotate the wind turbine; in the Darius or Gyromill type, etc. The blade's lifting force is used to turn the wind turbine's pop type.

However, conventional wind turbines often have many problems, such as the existing vertical wind turbine 9 shown in Fig. 1, which has a rotating shaft 94 and is provided with a plurality of vertical axes around the rotating shaft 94. a blade 90, and each blade 90 is connected by a plurality of support rods 92; wherein the material of the blade 90 may be formed of a plastic material or a polymer material; in addition, the connection manner of the blade 90 and the support rod 92 is a screw After the blade 90 is inserted through the support rod 92, when the blade 90 is rotated by the wind, most of the rotational force generated by the wind will fall on the locking point 96 of the blade 90 and the support rod 92; Structural damage and looseness occur at the locking point 96 of the blade 90 and the support rod 92, so the lock of the blade 90 and the support rod 92 must be checked at any time. The fixing point 96, at the same time, also requires the replacement of the blade 90 from time to time, resulting in a cost burden. Summary of the invention

In order to solve the above-mentioned problems, it is a primary object of the present invention to provide a blade having a fixed seat integrally formed with the blade, which can reduce damage caused by the configuration of the locking through-hole lock and enhance the strength of the overall blade.

According to the above object, the present invention provides a blade, the structure comprising: a long plate body having a first end and a second end opposite to the first end, the elongated plate body exhibiting a spiral curved shape; a pair of baffles disposed at the first end and the second end of the elongated plate body, the pair of baffles having a width greater than the elongated plate body; and a pair of fixing seats having a fixing plate and a plurality of bolts, and The fixing seat is disposed on the side of the long plate body and is embedded in the long plate body, wherein the studs of the bolts protrude from the side of the long plate body.

Another main object of the present invention is to provide a wind power generator having a fixed seat integrally formed with the blade to prevent structural damage and looseness caused by the rotational force generated by the wind.

Still another main object of the present invention is to provide a wind power generator in which a pair of baffles are disposed at both ends of a blade of a wind power generator to make the blades more stable during operation.

According to the above objective, the present invention provides a wind power generator comprising a plurality of connecting brackets, a power generating module connected to the connecting brackets, and a blade connected to the connecting brackets, wherein the structure of the blades comprises: a strip body having a first end and a second end opposite to the first end, the elongated strip body exhibiting a spiral curved shape; a pair of baffles disposed at the first end of the elongated strip body and a second end, the pair of baffles having a width greater than the elongated plate body; and a pair of fixing seats having a fixing plate and a plurality of bolts, wherein the fixing seat is disposed on the side of the elongated plate body and is embedded in the long strip plate In the body, the studs of the bolts protrude from the side of the elongated plate body.

The blade and the wind power generator proposed by the invention can resist the natural wind and can generate multiple vibrations and shaking. The integrally formed fixing seat can avoid the looseness and damage of the connection point caused by multiple shaking, and the blade and the wind power generator The service life is extended; and the baffles placed at the ends of the blades enable the wind turbine to be more stable when rotated. DRAWINGS

1 is a schematic view of a conventional vertical wind power generator; FIG. 2 is a schematic view of a blade of the present invention;

Figure 3 is a cross-sectional view of the first embodiment of the present invention; Figure 4B is a schematic view of a second fiber of the present invention; Figure 4C is a schematic view of a third fiber of the present invention; Figure 4A is a perspective view of the interior of the blade of the present invention; Figure 5B is a side cross-sectional view of the interior of the blade of the present invention; Figure 6 is a schematic view of the wind power generator of the present invention.

[Main component symbol description]

1 blade

2 wind turbine

10 strip body

101 first end

103

125 side

12 deflector

121 tip

123 arc end

1231 diversion bump

20 mount

201 fixed plate

203 bolt

2031 bolt head

2033 stud 32 main beam

40 foam layer

50 connection bracket

51 spindle

52 power generation module

60 gap

9 Wind turbines (previous technology)

90 blades (prior art)

92 support rod (prior art)

94 rotary axis (prior art)

96 locking point (prior art)

In order to make the objects, technical features and advantages of the present invention become apparent to those skilled in the relevant art, the present invention will be described in the accompanying drawings. The invention is further illustrated by the following examples, which are not intended to limit the invention, and the drawings referred to hereinafter are intended to be illustrative of the features of the invention.

First, please refer to Fig. 2, which is a schematic view of the blade of the present invention. As shown in FIG. 2, the blade 1 includes: a long plate body 10 having a first end 101 and a second end 103 opposite to the first end 101; the cross-section of the elongated plate body 10 is in the shape of a drop. The overall strip body 10 has a spiral curved shape, wherein the long spiral body 10 has a curved helix angle of 0.1 μ ~ 0.5 μ; and the deflector 12 is disposed at the first end of the long strip 10 101 and the second end 103, the pair of baffles 12 also have a shape of a drop, and the width thereof is larger than the cross-sectional width of the elongated plate 10; wherein the drop-shaped baffle 12 has a tip 121 and an arc The end 123, when the deflector 12 is disposed on the first end 101 and the second end 103 of the strip body 10, the arc end 123 protrudes from the strip body 10, and forms a flow guiding bump 1231; The pair of fixing brackets 20 (see FIG. 3 ) are disposed on the side surface 125 of the elongated board body 10 and are embedded in the elongated board body 10 , wherein each of the fixing bases 20 includes a plurality of inlaid in the elongated board body 10 . Bolt 203 (see Figure 3), and the stud 2033 of each bolt 203 protrudes On the side 125 of the elongated body 10.

It is emphasized here that although the preferred embodiment of the blade 1 of the present invention is a curved shape having a helix angle, in another embodiment, the blade 1 may be in the shape of a straight plate having no helix angle (only a cross-sectional profile exhibits a drop shape); The present invention is not limited to the bending of the blade 1, and the fixing seat 20 of the blade 1 is embedded in the elongated plate body 10, which is an invention conforming to the blade 1.

Next, please refer to FIG. 3, which is a cross-sectional view of the fixing base of the present invention. As shown in FIG. 3, the fixing base 20 includes a fixing plate 201 and a plurality of bolts 203; the stud 2033 of the bolt 203 passes through a through hole (not shown) on the fixing plate 201, and is stuck by the bolt head 2031 of the bolt 203. The fixing plate 201 is fixed, and the stud 2033 of the bolt 203 protrudes from the side surface 125 of the elongated plate body 10.

The fixing plate 201 and the side surface 125 of the elongated plate body 10 have a gap 60, and are filled with a plurality of fiber materials of different knitting angles under the gap 60 and the fixing plate 201, thereby fixing the fixing plate 201 and the bolt 203, and The holder 20 is integrated with the blade 1.

Next, please refer to Figs. 4A to 3⁄4 4D, which are schematic views of the fiber weaving angles of the various fiber materials used in the blade of the present invention. As shown in Fig. 4 to Fig. 40, the blade 1 is formed by coating a plurality of fiber materials of different weaving angles with a polymer material and a foam layer (Foam) disposed in the multi-layer fiber material. The fiber weaving angle is as shown in FIG. 4 to FIG. 4D, wherein the first fiber of FIG. 4A is a fiber material of a braiding angle of ±45 degrees; and the second fiber of FIG. 4B is a braiding angle of 45 degrees. Fiber material; the third fiber of Figure 4C is a 0 degree (or referred to as fiber bundle) weave angle fiber material; and the fourth fiber of Figure 4D is a 0 degree and 90 degree weave angle Fiber material. It is apparent that the fiber materials of the various weaving angles shown in Figures 4-8 to 4D each have different strengths. The present invention utilizes these different strength fiber materials as the constituent material of the blade 1.

Next, please refer to FIG. 5A to FIG. 5B , which are perspective and side cross-sectional views of the inside of the blade of the present invention. First, as shown in FIG. 5A, in the blade 1, a plurality of ribs 30 parallel to the baffle 12 are disposed, and a main beam 32 extending from the first end 101 of the elongated plate body 10 to the second end 103 is disposed. The material of the rib 30 and the main beam 32 is a fiber material. Further, the fiber material disposed in the deflector 12 is the same as the fiber material used for the rib 30 (for example, the fiber material of the knitting angle of ±45 degrees in Fig. 3A); and the fiber material used in the main beam 32 is tougher. The fiber material (for example: Figure 3C is a 0 degree weave angle of fiber material). Next, as shown in FIG. 5B, when the main beam 32 is disposed in the blade 1, it is laid in an I-shape between the foam layer 40 (foam), and the fiber material laid inside the blade 1 is disposed on both sides. The plurality of ribs 30 are combined; during the manufacturing process of the blade 1, the injection molding process is performed by vacuuming, and the polymer material is injected into the fiber material of the blade 1 with different knitting angles, and the blade 1 is completely covered; In a preferred embodiment of the present invention, the polymer material used may be a resin material such as an unsaturated resin (UP) or an unsaturated resin Nano (Nano) clay, or a saturated resin (epoxy resin: Epoxy Resin) or saturated resin (epoxy resin: Epoxy Resin). The fiber material inside the blade 1, the rib 30, the main beam 32, the fixing base 20, and the foam layer 40 are combined into a integrally formed structure by injection of a polymer material.

Please refer to FIG. 6, which is a schematic diagram of the wind power generator of the present invention. As shown in FIG. 5, the wind power generator 2 is composed of a blade module via a main shaft 51 and a generator module 52. The blade module is formed by a plurality of blades 1, and each blade 1 and one end of a plurality of connecting brackets 50 are formed. The other end of each of the connection brackets 50 is fixed to the main shaft 51. When the wind power generator 2 of the present invention is started, the blade bracket can be rotated by the blade module, so that the armature (not shown) in the power generation module 52 is also rotated, so that the power generation effect can be generated.

The integrally formed blade 1 of the present invention has a light and strong feature, and since the fixing base 20 is integrally formed with the blade 1, when the connecting bracket 50 of the wind power generator 2 is engaged with the blade, only the nut bolt 203 can be used. In addition, when the wind power generator 2 is in operation, its natural wind power may generate multiple vibrations and shaking, and the integrally formed fixing seat 20 can avoid loosening and damage of the connection point caused by multiple shaking, so that the blade 1 and The service life of the wind turbine 2 is extended; and the baffles 12 disposed at both ends of the blade 1 enable the wind turbine 2 to be more stable when rotated.

Although the present invention has been disclosed in the foregoing preferred embodiments, it is not intended to limit the invention, and those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of patent protection of the present invention is defined by the scope of the appended claims.

Claims

Claim

A blade having a structure comprising:

a long strip body having a first end and a second end opposite to the first end, the elongated strip body exhibiting a spirally curved shape;

a pair of baffles disposed at the first end and the second end of the elongated plate, the pair of baffles having a width greater than the elongated plate;

a pair of fixing bases having a fixing plate and a plurality of bolts, wherein the fixing seat is disposed on a side of the elongated plate body and embedded in the elongated plate body, wherein the studs of the bolts protrude from the strip This side of the board.

2. The blade according to claim 1, wherein the elongated plate has a curved helix angle of 0.1 μ to 0.5 μ.

3. The blade according to claim 1, wherein the blade is made of a polymer material.

4. The blade according to claim 3, wherein the polymer material is a resin.

5. The blade of claim 1 wherein a plurality of layers of fibrous material are further disposed in the blade.

6. The blade of claim 5, wherein a foamed material is disposed in the multilayer fibrous material.

7. The blade of claim 1 wherein the blade further comprises a plurality of ribs parallel to the pair of baffles.

8. The blade of claim 7, wherein the rib is a fiber material of a weave angle of ±45 degrees.

9. The blade of claim 1 wherein the blade further comprises a main beam extending from the first end to the second end.

10. The blade of claim 9, wherein the main beam is a 0 degree braided fiber material.

11. A wind power generator comprising a blade module and a generator module, wherein the blade module is formed by a plurality of blades, each of the blades being fixed to one end of the plurality of connection brackets, And the other end of each of the connecting brackets is fixed to the main shaft, wherein the structure of each of the blades comprises: a long strip body having a first end and a second end opposite to the first end, the length The strip body presents a spiral curved shape;

a pair of fixing bases having a fixing plate and a plurality of bolts, wherein the fixing seat is disposed on a side of the elongated plate body and embedded in the elongated plate body, wherein the studs of the bolts protrude from the strip The side of the plate body is fixed to the connecting bracket by the studs.

12. The blade according to claim 11, wherein the elongated plate has a curved helix angle of 0.1 μ ~ 0.5 μ.

13. The blade according to claim 11, wherein the blade is made of a polymer material.

The blade according to claim 13, wherein the polymer material is a resin.

15. The blade of claim 1 , wherein a plurality of layers of fibrous material are further disposed in the blade.

16. The blade of claim 15 wherein a foaming material is disposed in the multilayer fibrous material.

17. The blade of claim 1 1 , wherein the blade further comprises a plurality of ribs parallel to the pair of baffles.

18. The blade of claim 17, wherein the rib is a fiber material of a braid angle of ±45 degrees.

19. The blade of claim 11 wherein the blade further comprises a main beam extending from the first end to the second end.

20. The blade of claim 19, wherein the main beam is a 0 degree braided fiber material.

21. A blade, the structure comprising:

a long strip having a first end and a second end opposite the first end;

a pair of fixing bases, having a fixing plate and a plurality of bolts, wherein the fixing seat is disposed on the long board The side of the body is embedded in the elongated body, and the studs of the bolts protrude from the side of the elongated body.

22. A wind power generator comprising a blade module and a generator module, the blade module being formed by a plurality of blades, each blade being fixed to one end of the plurality of connection brackets, and each The other end of the connecting bracket is fixed to the main shaft, wherein the structure of each of the blades comprises: a long strip body having a first end and a second end opposite to the first end;