CN112324616A

CN112324616A - Automatic yaw control device for preventing wind generating set from overspeed

Info

Publication number: CN112324616A
Application number: CN202011294146.3A
Authority: CN
Inventors: 程学文; 刘洋广; 刘仁涛; 吴立东; 郭鹏; 刘志文
Original assignee: Datang Renewable Energy Test And Research Institute Co ltd
Current assignee: Datang Renewable Energy Test And Research Institute Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-02-05

Abstract

The invention discloses an automatic yaw control device for preventing an over-speed wind generating set, which comprises a base, wherein a supporting tube is connected to the top of the base, a driven turntable is rotatably connected to the top end of the supporting tube, the driven turntable is connected with a case, a generator is arranged in the case, an installing head is arranged at the front part of the case, blades are arranged on the installing head, the bottom of the case is connected with a protective shell, a motor rotating speed detector, a processor and a first controller are arranged in the protective shell, an installing shell is connected to the supporting tube, a servo motor is arranged in the installing shell, the servo motor is connected with a gear through a third rotating shaft, the gear is connected with a gear ring in; when the rotating speed of the generator exceeds the maximum rotating speed, the first controller controls the servo motor to start, and the servo motor drives the case to rotate through the third rotating shaft, the gear ring, the driving turntable, the fixed rod and the driven turntable so as to adjust the direction of the blade.

Description

Automatic yaw control device for preventing wind generating set from overspeed

Technical Field

The invention relates to the technical field of wind generating sets, in particular to an automatic yaw control device for preventing a wind generating set from overspeed.

Background

In recent years, the development of wind power in emerging markets is rapid. Under the background of national policy support and energy supply tension, the Chinese wind power industry, particularly the wind power equipment manufacturing industry, also rises rapidly, and becomes the most active place of wind power in the world. In 2006, 9% of the global wind power funds are thrown to China, and the total amount reaches 16.2 hundred million euros (about 162.7 hundred million yuan RMB). In 2007, the installed capacity of wind power in China is ranked the fifth in the world. The panoramic evaluation and development trend research report of the Chinese wind generating set analyzes the huge wind power market and the low-cost labor cost in China, attracts a large number of foreign wind power huge heads to be arranged in factories in China or adopts a mode of joint financing with domestic enterprises, and the produced products are all labeled with labels made in China. Wind power equipment products manufactured in china occupy an increasing market share, and wind turbine products are undergoing a shift from global manufacturing to china manufacturing.

Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. The wind energy reserve of China is very large and wide in distribution, and the wind energy reserve on the land is only about 2.53 hundred million kilowatts. The world wind market has grown at 40% of the year over the last 5 years. The world wind market is expected to increase 25% annually over the next 20-25 years. Now, the cost of wind power generation has dropped to 1/5 in 1980. With the development of technical progress and environmental protection, wind power generation will be completely competitive with coal-fired power generation in commerce. With the continuous aggravation of the competition of the power industry, domestic excellent power enterprises attach more and more importance to the research on the industry market, particularly the deep research on the industry environment.

At present, most wind generating sets adopt a variable pitch regulation operation mode, when a variable pitch system of the set fails and can not timely take in the pitch (the pitch angle is about 0 degree generally), the wind generating sets are in a windward state, the rotating speed of the wind generating sets is higher and higher, certain damage can be caused to a generator, if the rotating speed of the wind generating sets is too high, the set finally flies, accidents such as tower falling, ignition and the like occur, and the safety is low.

Based on the above, the invention designs an automatic yaw control device for preventing the wind generating set from overspeed so as to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide an automatic yaw control device for preventing a wind generating set from overspeed, the rotating speed of a generator is detected by a motor rotating speed detector, when the rotating speed of the generator exceeds the maximum rotating speed, the motor rotating speed detector sends a signal to a processor, the processor processes the signal, the servo motor is controlled to be started by a first controller, the servo motor drives a gear to rotate through a third rotating shaft, the gear drives a driving turntable to rotate through a gear ring, the driving turntable drives a driven turntable to rotate through a fixed rod, the driven turntable drives a case to rotate, the direction of blades is adjusted, and the blades deviate from the main wind direction, so that the overspeed runaway accident of the wind generating set is avoided, the safety is high, and the problems in the background technology are solved.

In order to achieve the purpose, the invention provides the following technical scheme: an automatic yaw control device for preventing a wind generating set from overspeed comprises a base, wherein a supporting tube is fixedly connected to the top of the base, a driven turntable is rotatably connected to the top end of the supporting tube, a case is fixedly connected to the top of the driven turntable, a generator is arranged in the case, a first rotating shaft is connected to the generator, a second rotating shaft is connected to the first rotating shaft through a gear box, the second rotating shaft penetrates through the case to be connected with an installing head, blades are fixedly connected to the installing head, a protective shell is fixedly connected to the bottom of the case, a motor rotating speed detector is arranged in the protective shell, a processor and a first controller are further arranged in the protective shell, an installing shell is fixedly connected to the supporting tube, a servo motor is arranged in the installing shell, the servo motor is connected with a gear through a third rotating shaft, the inner side of the gear is fixedly connected with a driving turntable, and the driving turntable is connected with a driven turntable through a fixing rod.

Preferably, the motor rotating speed detector, the processor, the first controller and the servo motor are electrically connected.

Preferably, the bottom wall is opened there is annular spout in the installation shell, be equipped with the slider in the annular spout, slider top fixedly connected with bracing piece, bracing piece top and initiative carousel bottom fixed connection, be equipped with control assembly in the annular slider.

Preferably, the control assembly comprises an insulating shell, an insulating column penetrates through the insulating shell, a metal sheet is fixedly connected to the right end of the insulating column and connected with the left inner wall of the insulating shell through a spring, a first electric contact block is installed on the upper inner wall of the insulating shell, a second electric contact block is installed on the lower inner wall of the insulating shell, and a storage battery and a second controller are arranged on the right inner wall of the insulating shell.

Preferably, the positive electrode of the storage battery is electrically connected with the second controller and the first electric contact block, the negative electrode of the storage battery is electrically connected with the second electric contact block, and the second controller is electrically connected with the servo motor.

Preferably, the motor rotating speed detector is electrically connected with the generator, and the model of the motor rotating speed detector is SGDN-2000.

Preferably, the base is provided with an electric power supply system, and the electric power supply system is electrically connected with the generator.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has novel structure, the rotating speed of the generator is detected by the motor rotating speed detector, when the rotating speed of the generator exceeds the maximum rotating speed, the motor rotating speed detector sends a signal to the processor, the processor processes the signal, the servo motor is controlled to start by the first controller, the servo motor drives the gear to rotate by the third rotating shaft, the gear drives the driving turntable to rotate by the gear ring, the driving turntable drives the driven turntable to rotate by the fixed rod, the driven turntable drives the case to rotate, the direction of the blade is adjusted, the blade deviates from the main wind direction, and therefore, the overspeed runaway accident of the wind turbine generator is avoided, and the safety is high.

2. According to the invention, when the driving turntable rotates to 90 degrees, the sliding block presses the insulating column to move towards the inside of the insulating shell, the insulating column drives the metal sheet to move, the spring is stretched, the metal sheet is contacted with the first electric contact block and the second electric contact block, the second controller starts to work, the second controller controls the servo motor to stop rotating, at the moment, the blades deviate from the main wind direction by 90 degrees, the rotating speed of the blades can be reduced, and therefore, the generator is prevented from being damaged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the mounting housing of the present invention;

FIG. 3 is a schematic view of the annular chute of the present invention;

FIG. 4 is a schematic structural diagram of a control assembly according to the present invention.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution of an automatic yaw control device for preventing overspeed of a wind turbine generator set: the device comprises a base 1, wherein a supporting tube 2 is fixedly connected to the top of the base 1, a driven turntable 24 is rotatably connected to the top of the supporting tube 2, a case 8 is fixedly connected to the top of the driven turntable 24, a generator 9 is arranged in the case 8, a first rotating shaft 10 is connected to the generator 9, the first rotating shaft 10 is connected to a second rotating shaft 12 through a gear box 11, the second rotating shaft 12 penetrates through the case 8 to be connected with an installing head 14, blades 13 are fixedly connected to the installing head 14, a protective shell 4 is fixedly connected to the bottom of the case 8, a motor rotating speed detector 6 is arranged in the protective shell 4, the motor rotating speed detector 6 detects the rotating speed of the generator 9, a processor 7 and a first controller 5 are further arranged in the protective shell 4, and when the rotating speed of the generator 9 exceeds the maximum rotating speed, the motor rotating speed detector 6, the treater 7 is handled the signal, controls servo motor 15 through first controller 5 and starts, fixedly connected with installation shell 3 on the stay tube 2, be equipped with servo motor 15 in the installation shell 3, servo motor 15 is connected with gear 17 through third pivot 16, the meshing of gear 17 is connected with ring gear 20, the inboard fixedly connected with initiative carousel 19 of gear 17, be connected between initiative carousel 19 through dead lever 18 and driven turntable 24, servo motor 15 drives gear 17 through third pivot 16 and rotates, and gear 17 drives initiative carousel 19 through ring gear 20 and rotates, and initiative carousel 19 drives driven turntable 24 through dead lever 18 and rotates, and driven turntable 24 drives quick-witted case 8 and rotates, adjusts the direction of blade 13.

The motor rotating speed detector 6, the processor 7, the first controller 5 and the servo motor 15 are electrically connected; the motor rotating speed detector 6 is electrically connected with the generator 9, the model of the motor rotating speed detector 6 is SGDN-2000, and the rotating speed detection effect on the generator 9 is good; an electric power supply system 26 is mounted on the base 1, and the electric power supply system 26 is electrically connected with the generator 9.

Wherein, the diapire has opened annular spout 22 in installation shell 3, be equipped with slider 23 in the annular spout 22, slider 23 top fixedly connected with bracing piece 21, bracing piece 21 top and 19 bottom fixed connection of initiative carousel, when initiative carousel 19 rotates, drive the motion of slider 23 through bracing piece 21, and slider 23 slides in annular spout 22, be equipped with control assembly 25 in the annular slider 23.

The control assembly 25 comprises an insulating shell 251, an insulating column 252 penetrates through the insulating shell 251, a metal sheet is fixedly connected to the right end of the insulating column 252, the metal sheet is connected with the left inner wall of the insulating shell 251 through a spring 253, a first electrical contact block 254 is installed on the inner wall of the insulating shell 251, a second electrical contact block 255 is installed on the lower inner wall of the insulating shell 251, when the driving turntable 19 rotates to 90 degrees, the sliding block 23 presses the insulating column 252 to move towards the inside of the insulating shell 251, the insulating column 252 drives the metal sheet to move, the spring 253 is stretched, the metal sheet is in contact with the first electrical contact block 254 and the second electrical contact block 255, and a storage battery 257 and a second controller 256 are arranged on the right inner wall of the insulating shell 251; the positive pole of the storage battery 257 is electrically connected with the second controller 256 and the first electric contact block 254, the negative pole of the storage battery 257 is electrically connected with the second electric contact block 255, the second controller 256 is electrically connected with the servo motor 15, and after the metal sheet is contacted with the first electric contact block 254 and the second electric contact block 255, the second controller 256 starts to work, the servo motor 15 is controlled by the second controller 256 to stop rotating, at the moment, the blades 13 deviate from the main wind direction by 90 degrees, the rotating speed of the blades 13 can be reduced, and therefore the generator 9 is prevented from being damaged.

The specific working principle is as follows:

when the wind power generator is used, wind drives the blades 13 to rotate, the blades 13 drive the second rotating shaft 12 to rotate through the mounting head 14, the second rotating shaft 12 drives the first rotating shaft 10 to rotate, the generator 9 generates electricity and transmits the electricity to the power supply system 26, the motor rotating speed detector 6 detects the rotating speed of the generator 9, when the rotating speed of the generator 9 exceeds the maximum rotating speed (generally 1900rpm), the motor rotating speed detector 6 sends a signal to the processor 7, the processor 7 processes the signal, the servo motor 15 is controlled to start through the first controller 5, the servo motor 15 drives the gear 17 to rotate through the third rotating shaft 16, the gear 17 drives the driving turntable 19 to rotate through the gear ring 20, the driving turntable 19 drives the driven turntable 24 to rotate through the fixed rod 18, the driven turntable 24 drives the case 8 to rotate, the direction of the blades 13 is adjusted, and when the driving turntable 19 rotates to 90 degrees, the slider 23 presses the insulating column 252 to move towards the inside of the insulating shell 251, the insulating column 252 drives the metal sheet to move, the spring 253 is stretched, the metal sheet is in contact with the first electric contact block 254 and the second electric contact block 255, the storage battery 257, the second controller 256, the first electric contact block 254, the metal sheet and the second electric contact block 255 form a closed loop, the second controller 256 starts to work, the second controller 256 controls the servo motor 15 to stop rotating, at the moment, the blades 13 deviate from the main wind direction by 90 degrees, the rotating speed of the blades 13 can be reduced, and therefore the generator 9 is prevented from being damaged.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic yaw control device for preventing wind turbines from overspeeding, comprising a base (1), characterized in that: the top of the base (1) is fixedly connected with a support pipe (2), and the support pipe (2) ) top is rotatably connected with a driven turntable (24), the top of the driven turntable (24) is fixedly connected with a case (8), the case (8) is provided with a generator (9), the generator (9) ) is connected with a first rotating shaft (10), the first rotating shaft (10) is connected with a second rotating shaft (12) through a gear box (11), and the second rotating shaft (12) passes through the casing (8) and is installed The heads (14) are connected to each other, a blade (13) is fixedly connected to the mounting head (14), a protective casing (4) is fixedly connected to the bottom of the chassis (8), and a motor is arranged in the protective casing (4). A rotational speed detector (6), a processor (7) and a first controller (5) are also installed in the protective casing (4), and a mounting casing (3) is fixedly connected to the support tube (2), so A servo motor (15) is arranged in the installation casing (3), the servo motor (15) is connected with a gear (17) through a third rotating shaft (16), and the gear (17) is meshed with a ring gear (20). The inner side of the gear (17) is fixedly connected with a driving turntable (19), and the driving turntable (19) is connected with the driven turntable (24) through a fixing rod (18).

2. The automatic yaw control device for preventing wind turbines from overspeeding according to claim 1, characterized in that: the motor rotational speed detector (6), the processor (7), the first controller (5) It is electrically connected with the servo motor (15).

3. The automatic yaw control device for preventing wind turbines from overspeeding according to claim 1, wherein the inner bottom wall of the installation casing (3) is provided with an annular chute (22), and the annular sliding A slider (23) is arranged in the groove (22), a support rod (21) is fixedly connected to the top of the slider (23), and the top of the support rod (21) is fixedly connected to the bottom of the active turntable (19). The annular slider (23) is provided with a control assembly (25).

4. An automatic yaw control device for preventing wind turbines from overspeeding according to claim 2, characterized in that: the control assembly (25) comprises an insulating casing (251), and the insulating casing (251) is provided with The insulating column (252) passes through, the right end of the insulating column (252) is fixedly connected with a metal sheet, and the metal sheet is connected with the left inner wall of the insulating casing (251) through a spring (253), and the insulating casing (251) is on the left inner wall. A first electrical contact block (254) is mounted on the inner wall, a second electrical contact block (255) is mounted on the lower inner wall of the insulating casing (251), and a battery (257) and a second electrical contact block (255) are mounted on the right inner wall of the insulating casing (251). controller (256).

5. The automatic yaw control device for preventing wind turbines from overspeeding according to claim 4, characterized in that: the positive electrode of the battery (257) is connected to the second controller (256) and the first electrical contact block ( 254), the negative electrode of the battery (257) is electrically connected to the second electrical contact block (255), and the second controller (256) is electrically connected to the servo motor (15).

6. The automatic yaw control device for preventing wind turbines from overspeeding according to claim 1, characterized in that: the motor speed detector (6) and the generator (9) are electrically connected, and the The model of the motor speed detector (6) is SGDN-2000.

7. The automatic yaw control device for preventing wind turbines from overspeeding according to claim 1, wherein a power supply system (26) is installed on the base (1), and the power supply system ( 26) Electrical connection with the generator (9).