High-speed shaft braking device of wind generating set

Abstract

The utility model relates to the technical field of wind power generation, in particular to a high-speed shaft braking device of a wind generating set, which comprises a braking support, a first braking oil cylinder is vertically and downwards arranged at the top of the braking support, and a first fixing disc is fixed on a piston rod of the first braking oil cylinder. A first brake disc is detachably mounted on the first fixed disc; a second brake oil cylinder is vertically and upwards arranged at the bottom of the brake support, a second fixing disc is fixed to a piston rod of the second brake oil cylinder, and a second brake disc is detachably installed on the second fixing disc; a first auxiliary braking device is arranged at the top of the braking support, and a second auxiliary braking device is arranged at the bottom of the braking support. The high-speed shaft braking device of the wind generating set has a good braking effect.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and particularly relates to a high-speed shaft braking device for a wind turbine generator set. Background Art

[0002] The high-speed shaft brake of a wind turbine generator set is a key component to ensure the safe operation of the wind turbine generator set. It realizes the secondary braking of the fan through hydraulic operation to stop the fan for maintenance, dealing with emergencies, etc. The structure of the existing high-speed shaft brake of a wind turbine generator set is relatively simple. During braking, there are problems such as slow braking speed and lack of brake disc wear alarm, resulting in poor braking effect. Content of the Utility Model

[0003] Objective of the utility model: The utility model provides a high-speed shaft braking device for a wind turbine generator set, which has a good braking effect.

[0004] To achieve the above objective, the technical solution of the utility model is as follows:

[0005] A high-speed shaft braking device for a wind turbine generator set includes a braking bracket. A first braking cylinder is vertically downward provided at the top of the braking bracket. A first fixed disk is fixed on the piston rod of the first braking cylinder. A first brake disc is detachably installed on the first fixed disk;

[0006] A second braking cylinder is vertically upward provided at the bottom of the braking bracket. A second fixed disk is fixed on the piston rod of the second braking cylinder. A second brake disc is detachably installed on the second fixed disk;

[0007] A first auxiliary braking device is provided at the top of the braking bracket, and a second auxiliary braking device is provided at the bottom thereof.

[0008] As an improvement: The braking bracket is U-shaped.

[0009] As an improvement: A plurality of distance sensors are vertically downward provided on the first brake disc.

[0010] As an improvement: A first pressure sensor is provided at the docking position of the piston rod of the first braking cylinder and the first fixed disk, and a second pressure sensor is provided at the docking position of the piston rod of the second braking cylinder and the second fixed disk.

[0011] As an improvement: A cooling air blowing port is provided on the right side of the braking bracket. A blowing funnel is provided on the right side of the cooling air blowing port. A blowing motor is horizontally provided at the bottom of the blowing funnel. A plurality of blowing fan blades are provided on the rotor of the blowing motor, and air inlet holes are provided on the blowing funnel.

[0012] As an improvement: The first auxiliary braking device includes a first supporting vertical plate, which is vertically and upwardly fixed on the braking bracket. On the first supporting vertical plate, a first auxiliary braking oil cylinder and a second auxiliary braking oil cylinder are symmetrically arranged. A first arc-shaped braking plate is fixedly connected to the piston rod of the first auxiliary braking oil cylinder and the piston cylinder of the second auxiliary braking oil cylinder;

[0013] A third auxiliary braking oil cylinder is horizontally arranged between the first auxiliary braking oil cylinder and the second auxiliary braking oil cylinder. A second arc-shaped braking plate is fixedly connected to the piston rod of the third auxiliary braking oil cylinder.

[0014] As an improvement: The second auxiliary braking device includes a second supporting vertical plate, which is vertically and downwardly fixed on the braking bracket. On the second supporting vertical plate, a fourth auxiliary braking oil cylinder and a fifth auxiliary braking oil cylinder are symmetrically arranged. A third arc-shaped braking plate is fixedly connected to the piston rod of the fourth auxiliary braking oil cylinder and the piston cylinder of the fifth auxiliary braking oil cylinder;

[0015] A sixth auxiliary braking oil cylinder is horizontally arranged between the fourth auxiliary braking oil cylinder and the fifth auxiliary braking oil cylinder. A fourth arc-shaped braking plate is fixedly connected to the piston rod of the sixth auxiliary braking oil cylinder.

[0016] In summary, the utility model has the following beneficial effects:

[0017] 1. During braking, the first brake disc and the second brake disc act on the brake disc of the high-speed shaft at the same time. Meanwhile, with the cooperation of the first auxiliary braking device and the second auxiliary braking device, the braking of the high-speed shaft of the wind turbine generator can be quickly realized;

[0018] 2. The distance sensor can sense the distance between the two brake discs during braking. When the distance between them is too small, the brake discs can be replaced in time;

[0019] 3. During braking, the blowing fan blades are driven by the blowing motor to blow air at the brake disc, so as to reduce the temperature at the brake disc and improve the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art.

[0021] Figure 1 Schematic diagram of the overall structure of a high-speed shaft braking device for a wind turbine generator Figure 1 ;

[0022] Figure 2 Schematic diagram of the overall structure of a high-speed shaft braking device for a wind turbine generator Figure 2 ;

[0023] Figure 3 For Figure 2 Schematic diagram of part A structure in

[0024] Wherein: 1. Brake bracket; 2. First brake cylinder; 3. Second brake cylinder; 4. First fixed disk; 5. Second fixed disk; 6. First brake disk; 7. Second brake disk; 8. Distance sensor; 9. First pressure sensor; 10. Second pressure sensor; 11. Cooling air outlet; 12. Blowing funnel; 13. Blowing motor; 14. Blowing fan blade; 15. First supporting vertical plate; 16. Second supporting vertical plate; 17. First auxiliary brake cylinder; 18. Second auxiliary brake cylinder; 19. Third auxiliary brake cylinder; 20. Fourth auxiliary brake cylinder; 21. Fifth auxiliary brake cylinder; 22. Sixth auxiliary brake cylinder; 23. First arc-shaped brake plate; 24. Second arc-shaped brake plate; 25. Third arc-shaped brake plate; 26. Fourth arc-shaped brake plate; 27. First auxiliary brake block; 28. Second auxiliary brake block; 29. Brake disk. Specific implementation mode

[0025] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Please refer to Figures 1 - 3 , a high-speed shaft braking device for a wind turbine, comprising a brake bracket 1, a first brake cylinder 2 is vertically downward provided at the top of the brake bracket 1, a first fixed disk 4 is fixed on the piston rod of the first brake cylinder 2, and a first brake disk 6 is detachably installed on the first fixed disk 4;

[0027] A second brake cylinder 3 is vertically upward provided at the bottom of the brake bracket 1, a second fixed disk 5 is fixed on the piston rod of the second brake cylinder 3, and a second brake disk 7 is detachably installed on the second fixed disk 5;

[0028] A first auxiliary braking device is provided at the top of the brake bracket 1, and a second auxiliary braking device is provided at the bottom thereof.

[0029] In this embodiment, during braking, the first brake disk 6 and the second brake disk 7 act on the brake disk 29 of the high-speed shaft simultaneously, and with the cooperation of the first auxiliary braking device and the second auxiliary braking device, the braking of the high-speed shaft of the wind turbine can be quickly achieved.

[0030] The brake bracket 1 is U-shaped. A plurality of distance sensors 8 are vertically downward provided on the first brake disk 6. In this embodiment, the distance sensors 8 can sense the distance between the two brake disks during braking. When the distance between the two is too small, the brake disks are replaced in time;

[0031] A first pressure sensor 9 is provided at the butt joint of the piston rod of the first braking oil cylinder 2 and the first fixed disk 4, and a second pressure sensor 10 is provided at the butt joint of the piston rod of the second braking oil cylinder 3 and the second fixed disk 5. In this embodiment, the pressure sensor can sense the pressure between the brake disk and the brake disc 29, so as to better control the braking pressure and improve the braking effect.

[0032] A cooling air blowing port 11 is formed on the right side of the braking bracket 1. A blowing funnel 12 is provided on the right side of the cooling air blowing port 11. A blowing motor 13 is horizontally provided at the bottom of the blowing funnel 12. A plurality of blowing fan blades 14 are provided on the rotor of the blowing motor 13, and air inlet holes are formed in the blowing funnel 12. In this embodiment, during braking, the blowing motor 13 drives the blowing fan blades 14 to blow air at the brake disc 29, thereby reducing the temperature at the brake disc 29 and improving the braking effect.

[0033] The first auxiliary braking device includes a first support vertical plate 15. The first support vertical plate 15 is vertically and upwardly fixed on the braking bracket 1. First auxiliary braking oil cylinders 17 and second auxiliary braking oil cylinders 18 are symmetrically provided on the first support vertical plate 15. A first arc-shaped brake plate 23 is fixedly connected to the piston rod of the first auxiliary braking oil cylinder 17 and the piston cylinder of the second auxiliary braking oil cylinder 18. A third auxiliary braking oil cylinder 19 is horizontally provided between the first auxiliary braking oil cylinder 17 and the second auxiliary braking oil cylinder 18. A second arc-shaped brake plate 24 is fixedly connected to the piston rod of the third auxiliary braking oil cylinder 19.

[0034] The second auxiliary braking device includes a second support vertical plate 16. The second support vertical plate 16 is vertically and downwardly fixed on the braking bracket 1. Fourth auxiliary braking oil cylinders 20 and fifth auxiliary braking oil cylinders 21 are symmetrically provided on the second support vertical plate 16. A third arc-shaped brake plate 25 is fixedly connected to the piston rod of the fourth auxiliary braking oil cylinder 20 and the piston cylinder of the fifth auxiliary braking oil cylinder 21. A sixth auxiliary braking oil cylinder 22 is horizontally provided between the fourth auxiliary braking oil cylinder 20 and the fifth auxiliary braking oil cylinder 21. A fourth arc-shaped brake plate 26 is fixedly connected to the piston rod of the sixth auxiliary braking oil cylinder 22.

[0035] Working principle: When braking is required, the first braking oil cylinder 2 and the second braking oil cylinder 3 are started, and the first braking disc 6 and the second braking disc 7 are respectively applied to the upper and lower side surfaces of the high-speed shaft braking disc 29. At the same time, the first auxiliary braking oil cylinder 17, the second auxiliary braking oil cylinder 18 and the third auxiliary braking oil cylinder 19 are started, and the first arc-shaped braking plate 23 and the second arc-shaped braking plate 24 are attached to the corresponding first auxiliary braking blocks 27 on the high-speed shaft. The fourth auxiliary braking oil cylinder 20, the fifth auxiliary braking oil cylinder 21 and the sixth auxiliary braking oil cylinder 22 are started, and the third arc-shaped braking plate 25 and the fourth arc-shaped braking plate 26 are attached to the corresponding second auxiliary braking blocks 28 on the high-speed shaft, so that the braking of multiple high-speed shafts can be quickly realized.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that; it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A high-speed shaft braking device for a wind turbine generator, characterized in that It includes a braking bracket, with a first braking oil cylinder vertically downward provided at the top of the braking bracket. A first fixing plate is fixed on the piston rod of the first braking oil cylinder, and a first braking disc is detachably installed on the first fixing plate; At the bottom of the braking bracket, a second braking oil cylinder is vertically upward provided. A second fixing plate is fixed on the piston rod of the second braking oil cylinder, and a second braking disc is detachably installed on the second fixing plate; A first auxiliary braking device is provided at the top of the braking bracket, and a second auxiliary braking device is provided at its bottom.

2. The high-speed shaft braking device of the wind turbine according to claim 1, characterized in that, The braking bracket is U-shaped.

3. The high-speed shaft braking device of the wind turbine according to claim 1, characterized in that A number of distance sensors are vertically downward provided on the first braking disc.

4. The high-speed shaft braking device of a wind turbine according to claim 1, characterized in that, A first pressure sensor is provided at the docking position of the piston rod of the first braking oil cylinder and the first fixing plate, and a second pressure sensor is provided at the docking position of the piston rod of the second braking oil cylinder and the second fixing plate.

5. The high-speed shaft braking device of the wind turbine according to claim 1, characterized in that, A cooling air blowing port is opened on the right side of the braking bracket. A blowing funnel is provided on the right side of the cooling air blowing port. A blowing motor is horizontally provided at the bottom of the blowing funnel. A number of blowing fan blades are provided on the rotor of the blowing motor, and air inlet holes are opened on the blowing funnel.

6. The high-speed shaft braking device of the wind turbine according to claim 1, characterized in that, The first auxiliary braking device includes a first supporting vertical plate, which is vertically upward fixed on the braking bracket. A first auxiliary braking oil cylinder and a second auxiliary braking oil cylinder are symmetrically provided on the first supporting vertical plate. A first arc-shaped braking plate is fixedly connected to the piston rod of the first auxiliary braking oil cylinder and the piston cylinder of the second auxiliary braking oil cylinder; A third auxiliary braking oil cylinder is horizontally provided between the first auxiliary braking oil cylinder and the second auxiliary braking oil cylinder, and a second arc-shaped braking plate is fixedly connected to the piston rod of the third auxiliary braking oil cylinder.

7. The high-speed shaft braking device of the wind turbine according to claim 1, characterized in that, The second auxiliary braking device includes a second supporting vertical plate, which is vertically downward fixed on the braking bracket. A fourth auxiliary braking oil cylinder and a fifth auxiliary braking oil cylinder are symmetrically provided on the second supporting vertical plate. A third arc-shaped braking plate is fixedly connected to the piston rod of the fourth auxiliary braking oil cylinder and the piston cylinder of the fifth auxiliary braking oil cylinder; A sixth auxiliary braking oil cylinder is horizontally provided between the fourth auxiliary braking oil cylinder and the fifth auxiliary braking oil cylinder, and a fourth arc-shaped braking plate is fixedly connected to the piston rod of the sixth auxiliary braking oil cylinder.

Images