TWI482907B - Pitch control development - Google Patents

Description

Blade rotation angle control device

The invention relates to an overload protection device for a wind power generator, in particular to a blade rotation angle control device, which is capable of changing a blade rotation angle with a rotation speed to avoid an overload and a wind power generator damage.

With the development and progress of industry and commerce, the global demand for electricity is increasing day by day, making the development of cheap, sufficient and pollution-free natural energy (such as wind power, solar power, hydropower, etc.) highly valued. Among them, the wind power generator uses the wind to drive the blades to rotate to drive the generator to generate electricity; that is, the wind turbine converts the wind energy into mechanical energy, converts the mechanical energy into electrical energy, and uses the battery to store the electrical energy. .

When the wind turbine is in actual operation, its movement process will gradually enter the steady-state power generation state from the unsteady acceleration state at the time of starting to stabilize the power generation; however, in order to avoid overloading the wind turbine when the wind speed is too strong, the damage will occur. In the case, the over-rotation protection device is generally provided for the wind turbine.

Please refer to FIG. 1 , which is a patent application filed by the applicant of the Republic of China Publication No. 201020393, the "blade angle control mechanism and its application", which discloses a wind turbine capable of controlling the rotation angle of the blade. A centrifugal device 9 and a vane angle variable device 8 are included. The centrifugal device 9 includes a centrifugal disk 91 and a plurality of rollers 92, and the plurality of rollers 92 are disposed in the centrifugal disk 91. The blade angle variable device 8 includes a control panel 81, a setting disk 82, a first spring 83, a plurality of second springs 84, and a plurality of adjusting members 85.

The control panel 81 includes a plurality of lifting elements 811 and a pressing element 812 disposed at intervals. The setting disk 82 is adjacent to the control panel 81. The setting disk 82 includes a plurality of setting portions 821 for accommodating a plurality of blade rotating shafts 822. A latch 823 is disposed at an end of each of the blade rotating shafts 822, and each of the mounting portions 821 is interposed between the adjacent lifting member 811 and the pressing member 812; the first spring 83 is sandwiched between the control panel 81 and the setting tray One end of each of the second springs 84 is engaged with the setting plate 82, and the other end is correspondingly hooked to one end of the latching pin 823; the plurality of adjusting elements 85 are also respectively abutted to one end of the latching pin 823.

Wherein, when the control panel 81 is raised to a predetermined height, the plurality of lifting elements 811 will raise one end of the corresponding latch 823; and when the control panel 81 is lowered to another preset height, the plurality The pressing member 812 then presses the other end of the corresponding pin 823. Therefore, the centrifugal device 9 of the wind power generator can change the pressing stroke of the blade rotation angle variable device 8 according to the magnitude of the centrifugal force to change the blade rotation angle of the wind power generator, thereby causing the blade to stall when overturned. Reduce the thrust of the blade.

However, the member design of the blade rotation angle variable device 8 is complicated, and it is difficult to manufacture or assemble, and even the lifting member 811, the pressing member 812, and the setting portion 821 have over design. The problem is that, in the case where the safety factors of the plurality of members are too high, not only the blade rotation angle variable device 8 is cumbersome, but also an unnecessary manufacturing cost is increased, and the resistance of the mass production promotion is formed. Moreover, the position of the second spring 84 and the adjusting member 85 is fixed and cannot be adjusted, so that the plurality of vane rotating shafts 822 can only rotate in a fixed direction, so that the vane angle variable device 8 is only suitable for a specific steering ( Turn clockwise or counterclockwise) For wind turbines, it is necessary to provide correspondingly matched blade angle variable devices 8 for two differently turned wind turbines.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a blade rotation angle control device which is simple in structure and has an appropriate safety factor, and which can improve assembly convenience and reduce manufacturing cost.

A second object of the present invention is to provide a blade rotation angle control device which is capable of changing the steering of the shaft portion of the blade to be suitable for wind turbine generators of various blade deflections.

In order to achieve the foregoing objectives, the technical content of the present invention includes: a blade rotation angle control device comprising: a mounting base having a shaft column and a plurality of rotating members, one end of the shaft column being coupled to the mounting seat a chassis, the plurality of rotating members are rotatably disposed on the mounting seat, and the plurality of rotating members are coupled to a blade; and a regulating assembly having a positioning seat, a resetting member and a plurality of linear moving members The positioning seat is movably disposed on the shaft post of the mounting seat, the resetting component is sleeved on the shaft post of the mounting seat, and one end of the resetting component abuts the mounting seat, and the other end of the resetting component abuts In the positioning seat, the plurality of linear moving parts are coupled to the positioning base, and the plurality of linear moving parts are respectively engaged with the corresponding rotating parts; wherein the positioning part of the regulating component is in a polygonal shape and is provided with a plurality of positioning parts The plurality of positioning portions are disposed at two ends adjacent to each side of the positioning seat for the plurality of linear moving members to engage to control the turning of the rotating members.

The blade rotation angle control device of the present invention may further comprise a centrifugal disk, the centrifugal disk is threaded through a shaft column of the mounting seat, and one of the centrifugal disks The other end of the centrifugal disc is abutted against the positioning base, and the centrifugal disc is provided with a plurality of sliding rails, and the plurality of sliding rails are radially arranged with the perforation as a center, each of the sliding rails The rail system is inclined downward toward the perforation, and each of the rails is provided with at least one rollable roller.

In the blade rotation angle control device of the present invention, a bearing is disposed between the rotating member and the mounting seat, and the bearing is externally locked by the inside of the mounting seat.

In the blade rotation angle control device of the present invention, the chassis of the mounting base is fixed to the mounting seat by a plurality of fasteners.

The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the appended claims. The present invention discloses a perspective exploded view and a partial cross-sectional combined view of the preferred embodiment of the present invention. In the present embodiment, the blade rotational angle control device includes a mounting base 1 and a regulating component 2, and the regulating component 2 can With respect to the linear movement of the mounting base 1, the plurality of blades 11 equiangularly disposed on the mounting base 1 can change the rotation angle.

The mounting base 1 is provided with a shaft column 12, and one end of the shaft column 12 is coupled to a chassis 13 of the mounting base 1. If necessary, the chassis 13 can be protruded to be connected to a conventional horizontal axis wind power generator. a base (not shown), the chassis 13 is disposed at one end of the mounting base 1, and the chassis 13 can be fixed to the bottom of the mounting base 1 through a plurality of fasteners 131 (in terms of the drawing). The detachable chassis 13 can facilitate the installation and adjustment of various components inside the mounting base 1.

The mounting base 1 is provided with a plurality of rotating members 14 . The rotating members 14 are preferably gears. The rotating members 14 are rotatably disposed on the mounting base 1 , and the rotating members 14 are respectively disposed. A shaft hole 141 is provided for coupling the shaft portions of the blades 11. In the embodiment, the shaft portions 111 of the plurality of blades 11 pass through the number of shaft holes (not labeled) of the mounting base 1 and are coupled to the shaft holes 141 of the corresponding rotating member 14, so that the plurality of blades 11 can The axial rotation is caused by the rotation of the rotary member 14 to change the wind receiving area of the blade 11. In addition, in order to make the rotation of the blade 11 smoother, the shaft holes of the mounting seat 1 can be respectively provided with a bearing 15 so that the shaft portion 111 of each blade 11 can be partially coupled to the bearing 15 (or the above-mentioned rotating member) 14 combined with the bearing 15, can also achieve the same combination of effects, familiar to those skilled in the art can understand). Among them, the plurality of bearings 15 can be locked outward from the inside of the mounting seat 1 to avoid the problem that the bearing 15 or the blades 11 fly off when the rotation is high.

The regulating assembly 2 has a positioning seat 21, a resetting element 22 and a plurality of linear moving parts 23. The positioning base 21 is defined by a hole 211 extending through the shaft post 12 of the mounting base 1 , and the resetting member 22 is disposed between the mounting seat 1 and the positioning seat 21 for defining the mounting seat 1 and the mounting bracket 1 . The distance between the positioning seats 21. In this embodiment, the restoring member 22 can be fitted to the shaft post 12 of the mounting base 1 by an elastic member (for example, a spring), and one end of the restoring member 22 abuts against the chassis 13 of the mounting base 1 . The other end of the reset element 22 abuts against the positioning base 21 .

The plurality of linear moving members 23 may be racks, and the plurality of linear moving members 23 are coupled to the positioning base 21, and the teeth of the plurality of linear moving members 23 and the corresponding rotating members 14 of the mounting base 1 Engagement by the plurality of linearities When the moving member 23 is displaced, the plurality of rotating members 14 are driven to generate synchronous rotation.

In addition, the positioning seat 21 of the regulating component 2 can also be in a polygonal shape in accordance with the number of the linear moving parts 23, and the positioning seat 21 can be provided with a plurality of positioning portions 24. In the embodiment, the plurality of positioning portions 24 may be a plurality of holes drilled in the lateral surface 212 of the positioning seat 21 for the respective linear moving members 23 to be combined. Moreover, the number of the linear moving members 23 is three in accordance with the number of the rotating members 14, so the positioning seat 21 can be substantially triangular, and the plurality of positioning portions 24 can be disposed adjacent to the positioning seat 21 At the two ends of the one side, the surface 212 of either side of the positioning seat 21 has at least two positioning portions 24 on each side. According to this, when the linear moving member 23 is coupled to the positioning portion 24 of the first end (for example, the left end, according to the third drawing) on each surface 212 of the positioning seat 21, the linear moving member 23 faces When the mounting seat 1 is nearly moved, the plurality of linear moving members 23 can drive the rotating member 14 on the positioning seat 21 to rotate in a first direction (for example, a counterclockwise direction); otherwise, the linear moving member 23 is coupled to the positioning seat. a plurality of linear moving members when the linear moving member 23 is moved toward the mounting base 1 when the positioning portion 24 of the second end (for example, the right end, according to the third drawing) of each surface 212 of the surface 21 23 can drive the rotating member 14 on the positioning seat 21 to rotate in a second direction (for example, clockwise direction). That is, by the plurality of positioning portions 24 of the plurality of linear moving members 23 combined on each surface 212 of the positioning seat 21, the rotating member 14 can be clockwise by the movement of the plurality of linear moving members 23. Or rotating counterclockwise to control the steering of each of the rotating members 14.

Therefore, the blade rotation angle control device of the present invention is only required when installed. The blades 11 of the wind turbine to be matched are turned, and the installation positions of the plurality of linear moving members 23 are determined, which can be applied to the wind turbines in which the blades 11 are turned, and the wind turbines that do not need to be turned for the different blades 11 respectively Since the blade rotation angle control device corresponding to the matching is provided, the blade rotation angle control device of the present invention has high practicability.

The movement of the regulating component 2 or the linear moving member 23 can be driven by various power components. In the embodiment, the blade rotation angle control device of the present invention further comprises a centrifugal disk 3, which can be driven by the centrifugal disk 3. The regulating unit 2 and the linear moving member 23 move. The centrifugal disk 3 is provided with a through hole 31 for the shaft column 12 of the mounting base 1. The top of the centrifugal disk 3 can be fixed to the shaft column 12 through a coupling member 32 (for example, a C-ring) or welding. The centrifugal disk 3 cannot be moved upward, and the bottom of the centrifugal disk 3 abuts against the positioning seat 21 of the regulating assembly 2. The tray 3 includes a tray 33 and a top tray 34. The tray 33 is provided with a plurality of slide rails 331. The plurality of slide rails 331 are radially disposed at a center of the through holes 31. The through holes 31 are inclined downwardly, and each of the sliding rails 331 is provided with at least one rollable roller 35, and the top plate 34 is disposed at the top of the tray 33 (in terms of the drawing) to The rollers 35 are limited to the tray 33.

Referring to FIG. 4, before the wind turbine is started, the rollers 35 in the centrifugal disc 3 are located in each of the slide rails 331, and the tray 33 of the centrifugal disc 3 is pushed by the resetting member 22 to make the tray 33 The top trays 34 can be attached to each other. At this time, the plurality of rollers 35 are located at one of the lower positions of the slide rails 331.

Referring to Figure 5, after the wind turbine is started, especially when the blade 11 is rotated at a high speed in response to strong winds, the centrifugal force will cause the roller 3 to roll. The column 35 is to be rolled outward along the slide rail 331 so that the plurality of rollers 35 form a pressing amount. Since the top plate 34 of the centrifugal disk 3 is fixed to the shaft column 12 and cannot move upward, the plurality of rollers 35 The roller 35 can abut against the top plate 34 to press the tray 33 downward, so that the plurality of linear moving members 23 are downwardly displaced to drive the plurality of rotating members 14 to rotate synchronously, thereby interlocking the plurality of blades 11 The axial rotation is caused to change the rotation angle of the blade 11 to change the wind receiving area of the blade 11, so that the rotation speed of the blade 11 is lowered and maintained stable, and at this time, the reset member 22 is compressed to a smaller size. In contrast, when the wind speed is weakened, the positioning seat 21 of the control unit 2 is moved upward by the resetting of the resetting member 22, so that the plurality of linear moving members 23 are displaced upward to interlock the plurality of blades. 11 axially rotating to restore a larger wind receiving area, and at the same time, the positioning seat 21 pushes the tray 33 so that the tray 33 and the top plate 34 can be attached to each other, and the plurality of rollers 35 are reset to the sliding rail 331 In one of the lower positions (as shown in Fig. 4), the blade rotation angle control device of the present invention can maintain output power stability.

As described above, the blade rotation angle control device of the present invention adjusts the wind receiving area of the blade 11 by the rotation member 14 and the linear moving member 23, and the member is simple and each member has an appropriate safety factor. Improve assembly convenience and reduce manufacturing costs.

The blade rotation angle control device of the present invention can adjust the installation position of the linear moving member 23 to determine the steering of the blade 11 according to the steering of the blade 11 of the wind turbine to be matched, and can be applied to the wind of various blade 11 steering. Generator, with high practicality.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and those skilled in the art can The scope of the present invention is to be construed as being limited by the scope of the appended claims.

〔this invention〕

1‧‧‧Installation seat

11‧‧‧ leaves

111‧‧‧Axis

12‧‧‧ shaft column

13‧‧‧Chassis

131‧‧‧Locker

14‧‧‧Rotating parts

141‧‧‧Axis hole

15‧‧‧ bearing

2‧‧‧Control components

21‧‧‧ Positioning Block

211‧‧‧ hole

212‧‧‧ surface

22‧‧‧Reset components

23‧‧‧Linear moving parts

24‧‧ ‧ Positioning Department

3‧‧‧ Centrifugal disk

31‧‧‧Perforation

32‧‧‧Connected parts

33‧‧‧Tray

331‧‧‧rails

34‧‧‧Top plate

35‧‧‧roller

[study]

9‧‧‧ centrifugal device

91‧‧‧ Centrifugal disk

92‧‧‧roller

8‧‧‧Shape angle variable device

81‧‧‧Control panel

811‧‧‧ lifting element

812‧‧‧Compressed components

82‧‧‧Setting disk

821‧‧‧Setting Department

822‧‧‧blade shaft

823‧‧‧ latch

83‧‧‧First spring

84‧‧‧Second spring

85‧‧‧Adjustment components

Figure 1: An exploded view of a conventional wind turbine.

Figure 2 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 3 is a partial cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a schematic view showing the implementation of a preferred embodiment of the present invention (1).

Figure 5 is a schematic view showing the implementation of a preferred embodiment of the present invention (2).

1. . . Mounting seat

11. . . blade

111. . . Shaft

12. . . Axis column

13. . . Chassis

131. . . Lock firmware

14. . . Rotating piece

141. . . Shaft hole

15. . . Bearing

2. . . Control component

twenty one. . . Positioning seat

211. . . Seat hole

212. . . surface

twenty two. . . Reset element

twenty three. . . Linear moving parts

twenty four. . . Positioning department

3. . . Centrifugal disk

31. . . perforation

32. . . Joint piece

33. . . tray

331. . . Slide rail

34. . . Top plate

35. . . Roller

Claims (4)

A blade rotation angle control device includes: a mounting base having a shaft column and a plurality of rotating members, one end of the shaft column being coupled to a chassis of the mounting seat, the plurality of rotating members being rotatably disposed on the a mounting seat, and the plurality of rotating members are coupled to a blade; and a regulating assembly having a positioning seat, a resetting member and a plurality of linear moving members, the positioning seat being movably disposed on the shaft post of the mounting seat The reset component is sleeved on the shaft post of the mounting seat, and one end of the reset component abuts the mounting seat, and the other end of the reset component abuts the positioning seat, and the plurality of linear moving components are coupled to the positioning The plurality of linear moving members are respectively engaged with the corresponding rotating members; wherein the positioning portion of the regulating assembly is in a polygonal shape and is provided with a plurality of positioning portions, and the plurality of positioning portions are disposed adjacent to the positioning seat. At the two ends of the one side, the rotation of each of the rotating members is controlled by engaging the plurality of linear moving members. The blade rotation angle control device according to claim 1, wherein a bearing is disposed between the rotating member and the mounting seat, and the bearing is externally locked by the inside of the mounting seat. According to the blade rotation angle control device of claim 1, there is further provided a centrifugal disk, the centrifugal disk is threaded through a shaft post of the mounting seat, and one end of the centrifugal disk is fixed to the shaft a column, the other end of the centrifugal disk abuts against the positioning seat, the centrifugal disk is provided with a plurality of sliding rails, and the plurality of sliding rails are arranged in a starting manner with the perforations as a center, each of the sliding rails facing the perforation Sloping downward, and each of the slide rails is provided with at least one scrollable Roller. The blade rotation angle control device according to claim 1, wherein the chassis of the mounting base is fixed to the mounting seat by a plurality of fasteners.