Wind power blade angle regulator

Abstract

The utility model relates to the technical field of wind power stations, in particular to a wind power blade angle regulator, which comprises a driving structure and a redundant sensor matrix, the driving structure comprises a main driving structure and a standby driving structure, and the main driving structure and the standby driving structure are matched and butted; the output end of the main driving structure is in butt joint with a speed reduction transmission assembly, the speed reduction transmission assembly comprises a first-stage transmission assembly and a second-stage transmission assembly which are in butt joint in a matched mode, and the output end of the second-stage transmission assembly is in butt joint with the ends of the blades in a matched mode. Meanwhile, the first-stage transmission assembly adopts a planetary gear assembly, so that load distribution is more uniform, abrasion is reduced, return stroke errors are eliminated through the self-locking characteristic of the turbine worm reducer, and an additional braking device is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power station technical field, concretely is a kind of wind power blade angle regulator. BACKGROUND

[0002] With the increasing attention of renewable energy, wind power generation as a clean, renewable energy form, has been widely used.Wind power blade as one of the core components of wind turbine generator set, its working efficiency directly affects the performance of the entire power generation system.In order to adapt to different wind speed conditions, improve wind energy utilization, the angle of wind power blade needs to be adjusted in real time.

[0003] The wind power blade angle regulator in prior art is adjusted by gear or hydraulic system, the gear type regulator has large energy loss and low overall adjustment efficiency when transmitting power due to the friction loss between gears.Although the hydraulic system improves the adjustment efficiency to some extent, its efficiency still needs to be improved due to system complexity and pressure loss, and if the actuator fails during use, the blade cannot be adjusted, which affects safety.

[0004] Therefore, a wind power blade angle regulator is needed to improve the above problems. SUMMARY

[0005] The utility model aims at providing a kind of wind power blade angle regulator to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of wind power blade angle regulator, including drive structure and redundancy sensor matrix, the drive structure includes main drive structure and standby drive structure, and main drive structure and standby drive structure are cooperatively docked;The output end of the main drive structure is docked with a speed reducer assembly, which includes cooperatively docked primary transmission assembly and secondary transmission assembly, and the output end of secondary transmission assembly is cooperatively docked with blade end.

[0008] As a preferred scheme of the utility model, the primary transmission assembly adopts planetary gear reducer, which includes base and rotary housing rotatably connected with the base, the inside of the base is provided with planetary gear set, the inside of the bottom end of rotary housing is provided with internal gear engaged with planetary gear set, and the upper end of rotary housing has convex end cooperatively docked with secondary transmission assembly.

[0009] As the preferred scheme of the utility model, the planetary gear set includes a central gear rotatably connected with the base, the lower end of the central gear is matched with the output end of the main drive structure, and the outer side of the central gear is provided with a plurality of outer side gears, and the plurality of outer side gears are all engaged with the inner gear.

[0010] As the preferred scheme of the utility model, the connecting part of the rotary shell and the base is provided with a plurality of bearings.

[0011] As the preferred scheme of the utility model, the secondary transmission assembly includes a worm gear reducer, and the inside of the worm gear reducer is provided with a self-locking worm gear set, the self-locking worm gear set includes a worm rotatably connected with the worm gear reducer, one end of the worm extends to the outside through the worm gear reducer, the upper end of the worm is provided with a worm wheel, the worm wheel is engaged with the worm, and the middle part of the worm wheel is connected with an output shaft, and the output shaft extends to the outside through the worm gear reducer.

[0012] As the preferred scheme of the utility model, the redundant sensor matrix includes an optical absolute encoder, a magneto electric multi-turn encoder and a brushless rotary transformer, the optical absolute encoder is installed on the outside of the output shaft of the main drive structure, the magneto electric multi-turn encoder is installed on the outside of the convex end of the upper end of the rotary shell, the brushless rotary transformer is installed on the outside of the output shaft, and the optical absolute encoder, the magneto electric multi-turn encoder and the brushless rotary transformer are all connected with a control assembly through wires.

[0013] As the preferred scheme of the utility model, the main drive structure includes a drive shell, the inside of the drive shell is provided with a main drive motor, the standby drive structure includes a standby motor embedded in the tail end of the drive shell, and the output end of the standby motor is connected with the other end of the shaft of the main drive motor through an electromagnetic jaw embedded clutch.

[0014] As the preferred scheme of the utility model, the main drive motor and the standby motor are connected with a main circuit and a redundant circuit through wires respectively.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、The utility model adopts the secondary transmission structure design, realizes efficient transmission, and the primary transmission assembly adopts the planetary gear assembly, so that the load distribution is more uniform, the wear is reduced, the self-locking characteristic of the worm gear reducer eliminates the back stroke error, and no additional brake device is needed.

[0017] 2、The utility model is provided with the redundant design of the main drive structure and the standby drive structure, so that the main drive structure can be driven through the standby drive structure even in the case of failure, and the reliability is improved.

[0018] 3, The utility model discloses a redundant sensor matrix design, avoid single point fault to occur, improve fault detection efficiency effectively. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the first perspective solid drawing of the utility model;

[0020] Figure 2 It is the second perspective solid drawing of the utility model;

[0021] Figure 3 It is the third perspective solid drawing of the utility model;

[0022] Figure 4 It is the section view of the utility model;

[0023] Figure 5 It is the internal structure schematic view of two-stage transmission assembly in the utility model;

[0024] Figure 6 It is the section view of primary transmission assembly in the utility model.

[0025] In the drawing: drive casing 1, screw 2, planetary gear reducer 3, worm gear reducer 4, photoelectric absolute value encoder 5, brushless rotary transformer 6, output shaft 7, shell 8, magneto type multi-turn encoder 9, rotary casing 10, worm 11, worm wheel 12, main drive motor 13, standby motor 14, electromagnetic tooth-embedded clutch 15, central gear 16, outer gear 17, inner gear 18. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described below in a clear and complete manner with reference to the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the related. Several embodiments of the utility model are given. However, the utility model can be realized in many different forms, and is not limited to the embodiments described in this paper. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] Referring to Figures 1-6 , the application provides a technical scheme:

[0031] Embodiments, please refer to Figure 1 , 2 , 3, 4, 5 and 6, a wind turbine blade angle regulator, comprising a drive structure and a redundant sensor matrix, the drive structure comprises a main drive structure and a standby drive structure, and the main drive structure and the standby drive structure are matched and docked; the output end of the main drive structure is docked with a speed reduction transmission assembly, the speed reduction transmission assembly comprises a first transmission assembly and a second transmission assembly matched and docked, and the output end of the second transmission assembly is matched and docked with the end of the blade.

[0032] The redundant design of the main drive structure and the standby drive structure enables the standby drive structure to drive when the main drive structure fails, thereby improving the reliability of the drive system. The speed reduction transmission assembly adopts a two-stage transmission structure design to realize efficient transmission. Meanwhile, the first transmission assembly adopts a planetary gear assembly to make the load distribution more uniform and reduce wear. The self-locking feature of the worm gear reducer eliminates the back stroke error without the need for additional braking devices.

[0033] Referring to Figure 4 and 6The first-stage transmission assembly adopts a planetary gear reducer 3, which comprises a base and a rotating shell 10 rotationally connected with the base. The inside of the base is provided with a planetary gear set, and the inside of the bottom end of the rotating shell 10 is provided with an internal gear 18 engaged with the planetary gear set. The upper end of the rotating shell 10 has a convex end for mating with the second-stage transmission assembly. The planetary gear set comprises a central gear 16 rotationally connected with the base. The lower end of the central gear 16 is matingly connected with the output end of the main drive structure. The outside of the central gear 16 is provided with a plurality of outside gears 17, and the plurality of outside gears 17 are all engaged with the internal gear 18. The connection between the rotating shell 10 and the base is provided with a plurality of bearings.

[0034] The central gear 16 and the convex end of the rotating shell 10 are coaxial with the planet carrier. Compared with a parallel-shaft gear box, the volume is reduced, the planetary gears share the load at the same time, the force on a single tooth is reduced, a plurality of teeth are engaged and supported by rolling bearings, the transmission efficiency is improved, and the power consumption of the drive structure is significantly reduced.

[0035] Please refer to Figure 4 and 5 The second-stage transmission assembly comprises a worm gear reducer 4, and the inside of the worm gear reducer 4 is provided with a self-locking worm gear set. The self-locking worm gear set comprises a worm 11 rotationally connected with the worm gear reducer 4. One end of the worm 11 extends to the outside through the worm gear reducer 4. The upper end of the worm 11 is provided with a worm wheel 12 engaged with the worm 11. The worm wheel 12 is connected with an output shaft 7, and the output shaft 7 extends to the outside through the worm gear reducer 4.

[0036] Please refer to Figure 1 , 2 , 3 and 4. The redundant sensor matrix comprises an optical absolute encoder 5, a magneto-electric multi-turn encoder 9 and a brushless rotary transformer 6. The optical absolute encoder 5 is installed on the outside of the output shaft of the main drive structure. The magneto-electric multi-turn encoder 9 is installed on the outside of the convex end of the upper end of the rotating shell 10. The brushless rotary transformer 6 is installed on the outside of the output shaft 7. The optical absolute encoder 5, the magneto-electric multi-turn encoder 9 and the brushless rotary transformer 6 are all connected with a control assembly through wires.

[0037] Please refer to Figure 4 The main drive structure comprises a drive shell 1, and the inside of the drive shell 1 is provided with a main drive motor 13. The standby drive structure comprises a standby motor 14 embedded in the tail end of the drive shell 1. The output end of the standby motor 14 and the other end of the shaft of the main drive motor 13 are connected through an electromagnetic tooth-embedded clutch 15. The main drive motor 13 and the standby motor 14 are respectively connected with a main circuit and a redundant circuit through wires.

[0038] The main drive motor 13 and the standby motor 14 are connected with the main circuit and the redundancy circuit through wires respectively, and are controlled respectively, when the main drive motor 13 fails, the electromagnetic jaw clutch 15 is automatically engaged by power-off, the main drive motor 13 is driven to rotate through the standby motor 14, the standby drive is realized, and the stability and the reliability of the overall structure are improved.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade angle regulator comprising a drive structure and a redundant sensor matrix, characterized in that: The driving structure comprises a main driving structure and a backup driving structure, and the main driving structure and the backup driving structure are in matched butt joint; The output end of the main driving structure is butt jointed with a speed reduction transmission assembly, the speed reduction transmission assembly comprises a first-stage transmission assembly and a second-stage transmission assembly in matched butt joint, and the output end of the second-stage transmission assembly is in matched butt joint with the end of the blade.

2. A wind turbine blade angle regulator according to claim 1, characterised in that: The first-stage transmission assembly adopts a planetary gear reducer (3), the planetary gear reducer (3) comprises a base and a rotary shell (10) in rotary connection with the base, the inside of the base is provided with a planetary gear set, the inside of the bottom end of the rotary shell (10) is provided with an internal gear (18) in meshing with the planetary gear set, and the upper end of the rotary shell (10) has a convex end in matched butt joint with the second-stage transmission assembly.

3. A wind turbine blade angle regulator according to claim 2, characterised in that: The planetary gear set comprises a central gear (16) in rotary connection with the base, the lower end of the central gear (16) is in matched butt joint with the output end of the main driving structure, and the outside of the central gear (16) is provided with a plurality of outside gears (17) in meshing with the internal gear (18).

4. A wind turbine blade angle regulator according to claim 3, characterised in that: The connection part of the rotary shell (10) and the base is provided with a plurality of bearings.

5. Wind turbine blade angle regulator according to any of claims 2-4, characterized in that: The second-stage transmission assembly comprises a worm gear reducer (4), and the inside of the worm gear reducer (4) is provided with a self-locking worm gear set, the worm gear set comprises a worm (11) in rotary connection with the worm gear reducer (4), one end of the worm (11) extends to the outside through the worm gear reducer (4), the upper end of the worm (11) is provided with a worm wheel (12) in meshing with the worm (11), and the middle part of the worm wheel (12) is connected with an output shaft (7) extending to the outside through the worm gear reducer (4).

6. A wind turbine blade angle regulator according to claim 5, characterised in that: The redundant sensor matrix comprises an optical absolute encoder (5), a magneto multi-turn encoder (9) and a brushless resolver (6), the optical absolute encoder (5) is installed on the outside of the output shaft of the main driving structure, the magneto multi-turn encoder (9) is installed on the outside of the convex end of the upper end of the rotary shell (10), the brushless resolver (6) is installed on the outside of the output shaft (7), and the optical absolute encoder (5), the magneto multi-turn encoder (9) and the brushless resolver (6) are all connected with a control assembly through wires.

7. A wind turbine blade angle regulator according to any of claims 1-4, 6, characterised in that: The main driving structure comprises a driving shell (1), the inside of the driving shell (1) is provided with a main driving motor (13), the backup driving structure comprises a backup motor (14) embedded in the tail end of the driving shell (1), and the backup motor (14) is connected with the other end of the shaft of the main driving motor (13) through an electromagnetic jaw clutch (15).

8. A wind turbine blade angle adjuster according to claim 7, characterised in that: The main driving motor (13) and the backup motor (14) are respectively connected with a main circuit and a redundant circuit through wires.

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