TWI615547B - Device for fixing torque output of blades of wind griven generator - Google Patents

Abstract

A device for fixing the torque output of a wind turbine blade, which does not require external energy or power input to drive the measurement and blade torque output control device, is a fully passively controlled fixed wind turbine blade torque output device, and is at least coaxially shifted The box, the front high speed transmission shaft, the torque fixing mechanism, the rear high speed transmission shaft, the brake system, the low speed transmission shaft, and the pitch angle adjustment shaft are formed. When the wind turbine blade torque output changes, that is, the ambient wind speed is within the set operating wind speed range, the torque fixing mechanism generates a relative displacement amount, and the driving pitch angle adjusting shaft drives the blade pitch angle adjusting mechanism, thereby changing the blade pitch angle to make the blade The wind speed-torque output efficiency changes accordingly to maintain the stability of the blade torque output and achieve the torque of the fixed wind turbine blade output; when the wind speed is too small or too large, that is, the ambient wind speed is not within the set operation wind speed range, the torque fixing mechanism The brake system will be driven to stop the rotation of the wind turbine blades to ensure the stability of the wind turbine output and to reduce the loss of related parts when the wind speed is too high.

Description

Device for fixing wind turbine blade torque output

The invention relates to a device for fixing the torque output of a wind turbine blade, in particular to a fixed wind turbine blade torque output device with full passive control, in particular to the input of external power or other energy, or The measuring signal generated by other components is required to effectively maintain the torque input from the wind turbine blade to the generator and fix the output of the wind power generator.

The wind turbine is mainly composed of blades, transmission and transmission systems, generators and control systems. In order to maintain the output stability of the generator, the control system needs to adjust the blades or the transmission and the transmission system to maintain the same torque input to the generator. Sex. When the torque of the input generator is too high or too low, the output of the generator may not meet the specifications of the user, which may cause the user's equipment to work abnormally or damage. Similarly, excessive torque input will also reduce the life of wind turbine related components.

At present, wind turbines mostly measure the speed or torque of the generator and the variable speed system input to the generator, and then determine and drive the hydraulic equipment by the control system to change the pitch angle of the wind turbine blade to adjust the wind turbine blade. Wind speed - Torque output efficiency ensures stability of the input to the generator torque. In addition, the wind speed is measured by the wind speed. When the wind speed is lower than or exceeds a certain range, the control system will be hydraulic or other. The brake system is driven to ensure that the wind turbine is not rotated by the wind.

In general, wind turbines, which are commonly used in the current practice, measure the relevant wind speed, torque and speed by an anemometer, a torque meter and a tachometer that require electric power input, and are used as control inputs for the electric control system of the wind turbine. Through the input parameters, the electronic control system uses oil pressure or other power to drive the pitch angle adjustment mechanism to adjust the pitch angle of the blade, thereby fixing the torque output of the blade. In the case of excessive or too small wind speed, the electronic control system uses oil pressure or other power to drive the brakes to stop the rotation of the blades, to avoid the output of the generator does not meet the specifications, and to reduce the loss of the wind turbine. However, measuring equipment and oil pressure or other power output equipment must consume hard-to-reach electricity; similarly, the installation of these measuring equipment and power output equipment also increases the complexity and construction and operating costs of wind turbines, and reduces The reliability of the device. Therefore, the general practitioners cannot fully satisfy the needs of the user in actual use.

The main object of the present invention is to overcome the above problems encountered in the prior art and to provide a fully passively controlled device for torque output of a fixed wind turbine blade, which does not require external power or other energy input, and does not require other The measuring signal generated by the equipment can effectively maintain the torque input from the wind turbine blade to the generator and reach the output of the fixed wind power generator, thereby effectively reducing the energy loss of the wind power generator and reducing the structure of the wind power generator. Complexity, which in turn can effectively reduce wind turbine construction and operating costs, and improve the reliability of wind turbines.

For the purpose of the above, the present invention is a device for fixing the torque output of a wind turbine blade, comprising a coaxial gearbox fixed on a base for high torque and low speed generated by a blade assembly. The input is converted into a low-torque, high-speed output; a front high-speed transmission shaft is coupled to the coaxial transmission for transmitting the coaxial change a low torque and high speed output of the speed box; a torque fixing mechanism is connected to the front high speed transmission shaft for transmitting the torque output of the front high speed transmission shaft, the torque fixing mechanism includes a transmission sliding sleeve, and one is disposed at the a thrust flange on the drive sleeve, a torque fixing spring on one side of the thrust flange, and a thrust seat on one end of the torque fixing spring and fixed on the base, and the transmission sliding sleeve The utility model comprises a front sliding stability ring, a front channel key, a pitch angle adjusting shaft connector, a rear channel key and a rear sliding stability ring; a rear high speed transmission shaft is connected to the torque fixing mechanism for transmitting the torque The torque of the fixing mechanism is output to a generator; a braking system is disposed between the coaxial transmission and the generator, and is connected with the front high speed transmission shaft and the rear high speed transmission shaft for the blade assembly When the generated torque output is too large or too small, and can no longer be adjusted, the blade assembly rotation is stopped; and a pitch angle adjustment shaft is connected to the blade assembly and the torque fixing mechanism for transmitting the torsion force Pitch angle adjusting mechanism of the adjusting means output to the pitch angle of the blade assembly, the stationary turbine blades serve to torque output of the wind.

In the above embodiment of the present invention, the front high speed transmission shaft is provided with a torsion fixed front guide groove away from one end of the coaxial transmission, and the torsion fixes the front guide groove and is connected with the front guide groove.

In the above embodiment of the present invention, the geometry of the torsion-fixed front guide groove depends on the magnitude of the transmitted torque and the characteristics of the torsion-fixed spring.

In the above embodiment of the present invention, the torsion fixing mechanism is a cylindrical structure, a link structure or a structure of the above integrated form.

In the above embodiment of the present invention, the rear high speed transmission shaft is provided with a torsion fixing rear guide groove away from one end of the generator, and the torque is fixed to the rear guide groove and is connected with the rear guide groove. Pick up.

In the above embodiment of the present invention, the geometry of the guide groove after the torsion is fixed is the same as the geometry of the torsion fixed front guide groove.

In the above embodiment of the present invention, the brake system includes a brake drive ring disposed on the front high speed transmission shaft, a brake drive ring disposed on the rear high speed transmission shaft, and a disc fixed to the base. a brake caliper, and a disc brake disc disposed on the rear high speed transmission shaft and connected to the disc brake caliper.

In the above embodiment of the present invention, the pitch angle adjusting shaft is a solid shaft, a hollow shaft, a sleeve or a combination of the above, and the output of the torque fixing mechanism is transmitted to the blade in a push-pull, rotation or the above comprehensive form. The blade pitch angle adjustment mechanism of the assembly adjusts the pitch angle of the blades.

In the above embodiment of the present invention, the device for fixing the torque output of the wind turbine blade further comprises a low speed transmission shaft disposed between the blade assembly and the coaxial gearbox for inputting the torque of the blade assembly. Transfer to the input of the coaxial gearbox.

1‧‧‧ wind turbine

2‧‧‧ blade assembly

21‧‧‧ Blade pitch angle adjustment mechanism

22‧‧‧ blades

3‧‧‧Fixed wind turbine blade torque output device

31‧‧‧Coaxial gearbox

32‧‧‧Front high speed drive shaft

321‧‧‧Tighten fixed front guide groove

33‧‧‧Torque fixing mechanism

331‧‧‧ drive sleeve

3311‧‧‧ front sliding stability ring

3312‧‧‧ front slot key

3313‧‧‧pitch angle adjustment shaft connector

3314‧‧‧ rear guide slot key

3315‧‧‧Sliding stable ring

332‧‧‧Fighting flange

333‧‧‧Torque fixed spring

334‧‧‧ yoke

34‧‧‧After high speed drive shaft

341‧‧‧Tensile fixed rear guide groove

35‧‧‧ brake system

351‧‧‧Front brake drive ring

352‧‧‧Back brake drive ring

353‧‧ disc brake calipers

354‧‧ disc brake disc

36‧‧‧Low speed drive shaft

37‧‧‧pitch angle adjustment axis

38‧‧‧Base

4‧‧‧Generator

Figure 1 is a perspective view of a wind turbine in which the apparatus of the present invention is installed.

Figure 2 is a side elevational view of a wind turbine in which the apparatus of the present invention is installed.

Figure 3 is a side elevational view of the apparatus of the present invention.

Figure 4 is a partial side elevational view of the apparatus of the present invention.

Figure 5 is a perspective cross-sectional view of the drive sleeve of the apparatus of the present invention.

Please refer to the "Figure 1 ~ Figure 5", which is the wind for installing the device of the present invention. A schematic view of a power generator, a side view of a wind turbine in which the apparatus of the present invention is installed, a side view of the apparatus of the present invention, a partial side view of the apparatus of the present invention, and a schematic perspective view of a drive sleeve of the apparatus of the present invention. As shown in the figure: the present invention is a fully passively controlled device for controlling the torque output of a wind turbine blade, and is mainly applied to a wind power generator 1 which includes at least one blade assembly 2 and a fixed wind power. The motor blade torque output device 3 and a generator 4 are configured, wherein the blade assembly 2 includes a blade pitch angle adjusting mechanism 21 and a plurality of blades 22. Thereby, the device 3 can effectively maintain the torque input from the wind turbine blade to the generator to fix the wind power without the external power or other energy input or the measurement signal generated by other devices. The output of the motor can effectively reduce the energy loss of the wind turbine and reduce the structural complexity of the wind turbine, thereby effectively reducing the construction and operation cost of the wind turbine and improving the reliability of the wind turbine.

The device 3 for fixing the torque output of the wind turbine blade of the present invention comprises at least a coaxial gearbox 31, a front high speed transmission shaft 32, a torque fixing mechanism 33, a rear high speed transmission shaft 34, a braking system 35, A low speed drive shaft 36, a pitch angle adjustment shaft 37 and a base 38 are formed.

The coaxial transmission 31 mentioned above is fixed on the base 38 for converting the high torque and low speed input generated by the blade assembly 2 into a low torque and high speed output to the front high speed transmission shaft. 32.

The front high speed transmission shaft 32 is coupled to the coaxial transmission 31 for transmitting the low torque and high speed output of the coaxial transmission 31 to the torque fixing mechanism 33. Wherein, the front high speed transmission shaft 32 is disposed away from one end of the coaxial gearbox 31 with a torsion fixed front guiding groove 321 , and the geometric shape thereof is the magnitude of the transmitted torque. Corresponding to the characteristic of a torsion fixing spring 333, the torsion fixed front guiding groove 321 is connected with a front guiding groove key 3312, and can transmit the torque of the front high speed transmission shaft 32 to the torsion fixing mechanism 33; in addition, when the torque is fixed to the front guiding groove When the 321 is engaged with the leading groove key 3312, the transmitted torque can be presented in the form of thrust and torque.

The torsion fixing mechanism 33 can be a cylindrical structure, a link structure or a combination of the above, and is connected to the front high speed transmission shaft 32 for transmitting the torque input of the front high speed transmission shaft 32 to the rear high speed transmission shaft 34. The pitch angle adjustment shaft 37 is driven to drive the blade pitch angle adjustment mechanism 21 in a push-pull, rotation or combination of the above to change the pitch angle of the blades 22. The torsion fixing mechanism 33 includes at least one transmission sliding sleeve 331, a thrust flange 332 disposed on the transmission sliding sleeve 331, a torsion fixing spring 333 on a side of the thrust flange 332, and a The thrust fixing spring 333 has one end and is fixed to the thrust seat 334 on the base 38. The transmission sliding sleeve 331 is the only torque input in the torque fixing mechanism 33 that can transmit the front high speed transmission shaft 32 to the rear high speed transmission. The structure of the shaft 34; the thrust flange 332 is the interface between the transmission sleeve 331 and the force of the torsion fixing spring 333, so that the transmission sleeve 331 can slide toward the blade assembly 2 or the generator 4 The pitch angle adjusting shaft 37 is driven to drive the blade pitch angle adjusting mechanism 21 to change the pitch angle of the blades 22; the torque fixing spring 333 is used to balance the front high speed. The thrust generated between the transmission shaft 32 and the rear high speed transmission shaft 34 and the transmission sliding sleeve 331; the thrust seat 334 fixes one end of the torque fixing spring 333 for offsetting the reaction force generated by the torque fixing spring 333 . The transmission sleeve 331 includes at least one front sliding stability ring 3311 The driving sleeve 331 is slidable on the front high speed transmission shaft 32; a front channel key 3312 is coupled and coupled with the torque fixing front guiding groove 321 for transmitting the torque of the front high speed transmission shaft 32 to The transmission sleeve 331 and the transmitted torque are presented in the form of thrust and torsion in the transmission sleeve 331; a pitch angle adjustment shaft connector 3313 for connecting the pitch angle adjustment shaft 37, so that the transmission sleeve 331 can be The pitch angle adjusting shaft 37 is coupled and driven to drive the blade pitch angle adjusting mechanism 21 in a push-pull, rotation or combination thereof to change the pitch angle of the blades 22; a rear guide key 3314 is coupled with a torque The fixed rear guide groove 341 is matched and coupled to transmit the torque of the transmission sliding sleeve 331 to the rear high speed transmission shaft 34 and the transmitted torque is presented to the transmission sliding sleeve 331 in the form of thrust and torque; and a rear sliding The stabilizer ring 3315 is configured to stabilize the transmission sleeve 331 to slide on the rear high speed transmission shaft 34.

The rear high speed transmission shaft 34 is coupled to the torque fixing mechanism 33 for transmitting the torque output of the torque fixing mechanism 33 to the generator 4. Wherein, the rear high speed transmission shaft 34 is disposed away from the end of the generator 4 with a torsion fixing rear guiding groove 341, and the geometric shape thereof is the same as the torsion fixing front guiding groove 321, which fixes the rear guiding groove 341 and the rear guiding. The slot key 3314 is connected to transmit the torque of the torsion fixing mechanism 33 to the generator 4; in addition, when the torsion is fixed, the guiding groove 341 is engaged with the rear guiding slot key 3314, and the transmitted torque can be thrust and torque. The form is presented.

The brake system 35 is disposed between the coaxial transmission 31 and the generator 4, and is connected to the front high speed transmission shaft 32 and the rear high speed transmission shaft 34 for when the wind speed is too large or too small, that is, the total blade When the torque output generated by 2 is too large or too small, and the adjustment cannot be made again, the rotation of the blade assembly 2 is stopped. The brake system 3 The fifth system includes at least one brake drive ring 351 disposed on the front high speed transmission shaft 32, a brake drive ring 352 disposed on the rear high speed transmission shaft 34, and a disc brake caliper 353 fixed to the base 38. And a disc brake disc 354 disposed on the rear high speed transmission shaft 34 and connected to the disc brake caliper 353, wherein when the wind speed is too small, the front brake drive ring 351 will be pushed by the transmission sleeve 331 to drive the connecting rod The device, the hydraulic device or the above integrated form drives the engagement between the disc brake caliper 353 and the disc brake disc 354, thereby stopping the rotation of the vane assembly 2; when the wind speed is too large, the rear brake drive ring 352 will be The driving sleeve 331 is pushed to drive the connecting rod device, the hydraulic device or the above integrated form to drive the disc brake caliper 353 to engage with the disc brake disc 354, thereby stopping the rotation of the vane assembly 2; and the disc brake caliper The 353 is used to engage the disc brake disc 354. When the disc brake disc 354 is engaged, a considerable resistance will be generated to stop the rotation of the vane assembly 2.

The low speed drive shaft 36 is disposed between the blade assembly 2 and the coaxial transmission 31 for transmitting the torque input of the blade assembly 2 to the input end of the coaxial transmission 31.

The pitch angle adjusting shaft 37 can be a solid shaft, a hollow shaft, a sleeve or a combination of the above, and is connected to the blade pitch angle adjusting mechanism 21 of the blade assembly 2 and the pitch angle adjusting shaft connector of the torque fixing mechanism 33. 3313. The pitch angle adjustment output for transmitting the torque fixing mechanism 33 is output to the blade pitch angle adjusting mechanism 21 to fix the torque output of the blade assembly 2 of the wind power generator 1. If so, a new device for fixing the torque output of the wind turbine blade is constructed by the above disclosed structure.

When the invention is in use, the natural environment wind drives the blade assembly 2 to rotate and produce Torque, which is transmitted to the input end of the coaxial transmission 31 by the low speed transmission shaft 36. The coaxial transmission 31 converts the input of the low speed and high torque of the low speed transmission shaft 36 into an output of high speed and low torque, and the output is transmitted from the output end of the coaxial transmission 31 to the front high speed transmission shaft 32. The torsion-fixing front guide groove 321 of the front high-speed transmission shaft 32 cooperates with the front guide groove key 3312 of the transmission sliding sleeve 331 in the torsion fixing mechanism 33, and transmits the torque transmitted by the front high-speed transmission shaft 32 to the transmission sliding sleeve 331. A thrust along its axial direction is generated on the drive sleeve 331. After the transmission sleeve 331 of the torque fixing mechanism 33, the guide groove key 3314 is fixed to the rear guide groove 341 by the torque on the rear high speed transmission shaft 34, and the torque transmitted by the transmission sliding sleeve 331 is transmitted to the rear high speed transmission shaft 34. And generating a thrust along the axial direction of the drive sleeve 331. The rear high speed drive shaft 34 transmits the torque it carries to the input of the generator 4.

When the thrust generated by the transmission sleeve 331 transmitting torque is less than the thrust of the torsion fixing spring 333 acting on the thrust flange 332, the transmission sleeve 331 will move toward the blade assembly 2 and drive the pitch angle adjustment shaft. 37 moves in this direction, thereby driving the blade pitch angle adjusting mechanism 21, changing the pitch angle of the blades 22, increasing the wind speed-torque output efficiency of the blades 22, and increasing the torque output of the blade assembly 2. When the thrust generated by the transmission sliding sleeve 331 is greater than the thrust of the torsion fixing spring 333 acting on the thrust flange 332, the transmission sliding sleeve 331 will move toward the generator 4 and drive the pitch angle adjustment. The shaft 37 moves in this direction, thereby driving the blade pitch angle adjusting mechanism 21, changing the pitch angle of the blades 22, reducing the wind speed-torque output efficiency of the blades 22, and reducing the torque output of the blade assembly 2.

When the wind speed is too small, the torque fixing spring 333 will push the transmission sleeve 331 Moving toward the blade assembly 2, contacting the front brake drive ring 351 and moving it in the direction, causing the front brake drive ring 351 to drive the linkage device, the hydraulic device or the above integrated form to drive the disc brake caliper 353 and The engagement between the disc brake discs 354 further stops the rotation of the vane assembly 2. Similarly, when the wind speed is too large, the transmission sleeve 331 will compress the torsion fixing spring 333 and move toward the generator 4 to contact the rear brake driving ring 352 and move it in the direction, so that the rear brake driving ring The 352 drives the linkage device, the hydraulic device or the above integrated form to drive the engagement between the disc brake caliper 353 and the disc brake disc 354, thereby stopping the rotation of the vane assembly 2.

Therefore, the present invention utilizes the torsion force on the front and rear high speed transmission shafts to fix the front and rear guide grooves and the front and rear guide grooves in the front and rear guide grooves and the transmission sliding sleeve, and is matched with the torsion fixing spring. The use of the drive sleeve at different wind speeds, moving to the different positions of the front and rear high-speed transmission shaft axial direction, driving the pitch angle adjustment axis, and then driving the blade pitch angle adjustment mechanism to change the wind speed of the wind turbine blade - Torque output efficiency ensures stability of blade input to generator torque. When the wind speed is too small or too large, the drive sleeve will respectively push the front brake drive ring on the front high speed transmission shaft or the rear brake drive ring on the rear high speed transmission shaft to drive the engagement between the disc brake caliper and the disc brake disc to ensure the wind turbine generator. The blade does not rotate when the wind speed is too small or too large. The invention can effectively fix the torque output of the wind turbine blade by the composition of the above mechanical components, thereby stabilizing the output quality of the wind power generator.

In summary, the present invention is a device for fixing the torque output of a wind turbine blade, which can effectively improve various disadvantages of the conventional use, can effectively reduce energy consumption, reduce the construction and operation cost of the wind power generator, and enhance the device. The reliability, in turn, makes the invention more progressive, more practical, and more in line with the needs of the user. In accordance with the requirements of the invention patent application, the patent application shall be filed according to law.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the invention are modified. All should remain within the scope of the invention patent.

1‧‧‧ wind turbine

2‧‧‧ blade assembly

21‧‧‧ Blade pitch angle adjustment mechanism

22‧‧‧ blades

3‧‧‧Fixed wind turbine blade torque output device

31‧‧‧Coaxial gearbox

32‧‧‧Front high speed drive shaft

33‧‧‧Torque fixing mechanism

331‧‧‧ drive sleeve

332‧‧‧Fighting flange

333‧‧‧Torque fixed spring

334‧‧‧ yoke

34‧‧‧After high speed drive shaft

35‧‧‧ brake system

351‧‧‧Front brake drive ring

352‧‧‧Back brake drive ring

353‧‧ disc brake calipers

354‧‧ disc brake disc

36‧‧‧Low speed drive shaft

38‧‧‧Base

4‧‧‧Generator

Claims (9)

The utility model relates to a device for fixing a torque output of a wind turbine blade, comprising: a coaxial gearbox fixed on a base for converting a high torque and low speed input generated by a blade assembly into a low torque and a high The output of the speed; a front high speed transmission shaft is connected to the coaxial gearbox for transmitting the output of the low torque and high speed of the coaxial gearbox; a torque fixing mechanism is connected to the front high speed transmission shaft for transmitting the The torque output of the front high speed transmission shaft, the torque fixing mechanism comprises a transmission sliding sleeve, a thrust flange disposed on the transmission sliding sleeve, a torsion fixing spring on a side of the thrust flange, and a The torsion fixes one end of the spring and is fixed to the thrust seat on the base, and the transmission sliding sleeve comprises a front sliding stable ring, a front channel key, a pitch angle adjusting shaft connector, a rear channel key and a rear a sliding stable ring; a rear high speed transmission shaft is connected to the torque fixing mechanism for transmitting the torque output of the torque fixing mechanism to a generator; a braking system is disposed on the coaxial gearbox and the hair And connecting the front high speed transmission shaft and the rear high speed transmission shaft to stop the rotation of the blade assembly when the torque output generated by the blade assembly is too large or too small, and can no longer be adjusted; a pitch angle adjusting shaft connecting the blade assembly and the torsion fixing mechanism for transmitting a pitch angle adjustment output of the torsion fixing mechanism to a blade pitch angle adjusting mechanism of the blade assembly, to fix a wind turbine blade Torque output. Fixed wind turbine blade torque output according to item 1 of the patent application scope The front high speed transmission shaft is disposed away from one end of the coaxial gearbox with a torque fixing front guiding groove, and the torque fixing the front guiding groove and is connected with the front guiding groove. The device for fixing the torque output of the wind turbine blade according to the second aspect of the patent application, wherein the geometric shape of the torsion fixed front guide groove depends on the magnitude of the transmitted torque and the characteristics of a torsion fixed spring. The device for fixing the torque output of the wind turbine blade according to the first aspect of the patent application, wherein the torque fixing mechanism is a cylindrical structure, a link structure or a structure of the above integrated form. The device for fixing the torque output of the wind turbine blade according to the first aspect of the patent application, wherein the rear high speed transmission shaft is provided with a torsion fixed rear guide groove away from one end of the generator, and the torque is fixed to the rear guide groove and The rear channel key is connected. The device for fixing the torque output of the wind turbine blade according to the fifth aspect of the patent application, wherein the geometry of the guide groove after the torque is fixed is the same as the geometry of a torsion fixed front guide groove. The device for fixing the torque output of a wind turbine blade according to claim 1, wherein the brake system comprises a brake drive ring disposed on the front high speed transmission shaft and a rear high speed transmission shaft. Then, a brake driving ring, a disc brake caliper fixed to the base, and a disc brake disc disposed on the rear high speed transmission shaft and connected to the disc brake caliper. The device for fixing the torque output of the wind turbine blade according to the first aspect of the patent application, wherein the pitch angle adjustment shaft is a solid shaft, a hollow shaft, a sleeve or a combination of the above, for pushing, rotating or above In an integrated form, the output of the torsion fixing mechanism is transmitted to the blade pitch angle adjusting mechanism of the blade assembly to adjust the pitch angle of the blades. Fixed wind turbine blade torque output according to item 1 of the patent application scope The device further includes a low speed drive shaft disposed between the blade assembly and the coaxial gearbox for transmitting the torque input of the blade assembly to the input end of the coaxial gearbox.