CN216111106U

CN216111106U - Temperature overload protection device for wind power generation

Info

Publication number: CN216111106U
Application number: CN202122970280.7U
Authority: CN
Inventors: 高铭蔚; 林丹; 徐卜一; 陈炜; 韩博宇
Original assignee: Shenyang University of Technology
Current assignee: Shenyang University of Technology
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-22
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a temperature overload protection device for wind power generation, it relates to wind power generation technical field, install bin, a pair of bearing, fan shaft, flabellum and the conversion unit that generates electricity including support, cylinder, be provided with the cavity in the install bin, install bin fixed mounting is in the support upper end, the through hole has been seted up to install bin one side bottom surface, the rotatable through hole of installing in the install bin that runs through of fan shaft, the flabellum is installed in the one end that the fan shaft is in the install bin outside, and the other end of fan shaft is connected with the conversion unit that generates electricity, the temperature in the monitor install bin of temperature sensor through the utility model, just can transmit the work that signal control motor slowed down or stopped exceeding the setting value, has avoided the part in the install bin to cause the problem of damage because of the high temperature to the generating efficiency has been improved.

Description

Temperature overload protection device for wind power generation

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a temperature overload protection device for wind power generation.

Background

The principle of wind power generation is that wind power is used to drive windmill blades to rotate, and then the rotating speed is increased through a speed increaser, so that a generator is promoted to generate electricity. According to the windmill technology, the breeze speed of about three meters per second can start to generate electricity; however, if the wind power is too large, the rotating speed is too high, the generated temperature is too high, the rotating assembly can be damaged, economic loss is caused, the equipment is large in size and difficult to replace, and therefore the temperature overload protection device for wind power generation needs to be developed urgently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the temperature overload protection device for wind power generation, the temperature in the installation box is monitored through the temperature sensor, and when the temperature exceeds a set value, a signal is transmitted to control the motor to decelerate or stop, so that the problem that parts in the installation box are damaged due to overhigh temperature is solved, and the power generation efficiency is improved.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a temperature overload protection device for wind power generation comprises a support, a cylindrical installation box, a pair of bearings, a fan shaft, fan blades and a power generation conversion unit, wherein a cavity is formed in the installation box, the installation box is fixedly installed at the upper end of the support, a through hole is formed in the bottom surface of one side of the installation box, the fan shaft is rotatably arranged in the through hole of the installation box in a penetrating manner, the fan blades are installed at one end, located outside the installation box, of the fan shaft, the other end of the fan shaft is connected with the power generation conversion unit, the side wall, located in the cavity, of the fan shaft is rotatably connected with the inner wall of the installation box through the pair of bearings, four sliding grooves are formed in the same axial center of the inner wall of the installation box and the installation box, four sliding blocks are connected on the four sliding grooves in a sliding manner, a moving ring is jointly connected with the four sliding blocks, the side wall of one side of the moving ring can be driven to move through a driving structure, and the side wall of the other side of the moving ring is provided with a second brake block, the side wall of the fan shaft is provided with a first brake block, and a second brake block connected with the moving ring can drive the moving ring to move through a driving structure to be attached to the first brake block; a temperature sensor penetrates through the side wall of the installation box; and tension springs are arranged on the four sliding blocks and the side wall of the sliding groove corresponding to one side of the driving structure.

Preferably, the drive structure includes four motors, four pivots and four cams, four motors are evenly installed at the installation box outer wall round, and the installation box is provided with the through-hole to the position of motor, the drive end and the pivot one end of motor are connected, and the pivot runs through in the through-hole, and the other end and the cam of pivot are connected, the lateral wall and the shifting ring lateral wall butt of cam.

Preferably, the motor is fixedly connected with the outer wall of the installation box through the installation seat.

Preferably, a protective cover is arranged outside the motor and the temperature sensor.

Preferably, the second brake block and the first brake block are in a mutually matched conical groove type and conical shape.

Preferably, a plurality of mounting grooves have been seted up to the lateral wall that the shift ring corresponds installation second brake pad, be provided with compression spring in the mounting groove, compression spring's expansion end is connected with the cylinder brake pad that is less than the mounting groove diameter, and the cylinder brake pad can be with first brake pad butt when the shift ring removes.

Preferably, the bearing outer ring is fixedly connected with the inner wall of the installation box through a fixing ring.

The utility model provides a temperature overload protection device for wind power generation, which has the following beneficial effects:

1. according to the utility model, the temperature in the installation box is monitored by the temperature sensor, and when the temperature exceeds a set value, a signal is transmitted to control the motor to decelerate or stop, so that the problem that parts in the installation box are damaged due to overhigh temperature is avoided, and the power generation efficiency is improved;

2. the four groups of motors capable of working synchronously are arranged to drive the speed reduction or emergency braking to work, so that the running stability of the device is ensured, and the service life of the device is prolonged; the protective cover protects the motor and the temperature sensor from being influenced by external rainwater environment, and the service life of the device is ensured.

Drawings

Fig. 1 is a front sectional view of the temperature overload protection apparatus of the present invention.

Fig. 2 is a left side sectional view of the temperature overload protection apparatus of the present invention.

Fig. 3 is a partial view of the temperature overload protection apparatus of the present invention.

In the figure: 1. a fan blade; 2. a support; 3. a fixing ring; 4. a cavity; 5. a protective cover; 6. a slider; 7. a rotating shaft; 8. a fan shaft; 9. a bearing; 10. a cam; 11. a through hole; 12. a motor; 13. a mounting seat; 14. a chute; 15. a moving ring; 16. a temperature sensor; 17. installing a box; 18. mounting grooves; 19. a compression spring; 20. a cylindrical brake pad; 21. a first brake pad; 22. a second brake pad; 23. a power generation conversion unit; 24. a through hole; 25. a tension spring.

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.

As shown in fig. 1-3, a temperature overload protection device for wind power generation comprises a support 2, a cylindrical mounting box 17, a pair of bearings 9, a fan shaft 8, fan blades 1 and a power generation conversion unit 23, wherein a cavity 4 is arranged in the mounting box 17, the mounting box 17 is fixedly mounted at the upper end of the support 2, a through hole 24 is formed in the bottom surface of one side of the mounting box 17, the fan shaft 8 is rotatably mounted in the through hole 24 of the mounting box 17 in a penetrating manner, the fan blades 1 are mounted at one end of the fan shaft 8, which is positioned outside the mounting box 17, the other end of the fan shaft 8 is connected with the power generation conversion unit 23, the side wall of the fan shaft 8, which is positioned in the cavity 4, is rotatably connected with the inner wall of the mounting box 17 through the pair of bearings 9, the inner wall of the mounting box 17 and the mounting box 17 are coaxially provided with four sliding grooves 14, the four sliding grooves 14 are slidably connected with four sliding blocks 6, and the four sliding rings 15 are jointly connected with the sliding blocks 6, the side wall of one side of the moving ring 15 can be driven to move through a driving structure, the side wall of the other side of the moving ring 15 is provided with a second brake block 22, the side wall of the fan shaft 8 is provided with a first brake block 21, and the second brake block 22 connected with the moving ring 15 can drive the moving ring 15 to move through the driving structure to be attached to the first brake block 21; a temperature sensor 16 is arranged on the side wall of the mounting box 17 in a penetrating manner; tension springs 25 are arranged on the four sliding blocks 6 and the side wall of the sliding groove 14 corresponding to one side of the driving structure; the driving structure comprises four motors 12, four rotating shafts 7 and four cams 10, the four motors 12 are uniformly arranged on the outer wall of a mounting box 17 for one circle, through holes 11 are formed in the positions of the mounting box 17 for the motors 12, the driving ends of the motors 12 are connected with one ends of the rotating shafts 7, the rotating shafts 7 penetrate through the through holes 11, the other ends of the rotating shafts 7 are connected with the cams 10, and the side walls of the cams 10 are abutted to the side walls of a moving ring 15; the motor 12 is fixedly connected with the outer wall of the mounting box 17 through a mounting seat 13; the motor 12 and the temperature sensor 16 are externally provided with a protective cover 5; the second brake block 22 and the first brake block 21 are in a mutually matched conical groove type and conical shape; a plurality of mounting grooves 18 are formed in the side wall of the moving ring 15, which is correspondingly provided with the second brake block 22, a compression spring 19 is arranged in each mounting groove 18, the movable end of each compression spring 19 is connected with a cylindrical brake block 20 with the diameter smaller than that of the corresponding mounting groove 18, and the cylindrical brake block 20 can be abutted to the first brake block 21 when the moving ring 15 moves; and the outer ring of the bearing 9 is fixedly connected with the inner wall of the mounting box 17 through a fixing ring 3.

The detailed connection means is a technique known in the art, and the following main description is provided for the working principle and process, and specifically provided for the following:

in the utility model, the motor 12, the temperature sensor 16 and the power generation conversion unit 23 are all connected with an external electric control system through leads.

As can be seen from the drawings of the specification and the description of the figures 1-3, when the wind power generation device is used, the fan shaft 8 is driven by external wind power to rotate by the fan blade 1, and the fan shaft 8 is rotatably connected with the inner wall of the installation box 17 through the pair of bearings 9, and the other end of the fan shaft is connected with the power generation conversion unit 23, so that the rotation is stable and power generation is performed.

When wind power is large, the fan shaft 8 rotates fast, the bearing 9 and the power generation conversion unit 23 in the installation box 17 can generate heat for a long time, under the condition that the temperature sensor 16 monitors the temperature, when the temperature exceeds a certain set early warning value, the temperature sensor 16 transmits a signal to an external electric control system, the motor 12 is controlled to work, the driving end of the motor 12 drives the rotating shaft 7 to rotate 45 degrees, the cam 10 connected with the rotating shaft 7 rotates 45 degrees, namely the short shaft is abutted against the moving ring 15 and gradually changes into the position between the long shaft and the short shaft to be abutted against the moving ring 15, as the moving ring 15 is in sliding connection with the sliding groove 14 on the inner wall of the installation box 17 through the sliding block 6, the cam 10 pushes the moving ring 15 to stably and axially move towards the first brake block 21 on the fan shaft 8, at the moment, the bottom surface of the cylindrical brake block 20 is abutted against the first brake block 21, and the first brake block 21 is fixedly connected with the fan shaft 8, the movable ring 15 is axially movably connected to the mounting case 17 through the slide groove 14 and the slider 6, so that the cylindrical brake shoe 20 and the side wall of the first brake shoe 21 generate friction to decelerate the fan shaft 8, but the cylindrical brake shoe 20 and the compression spring 19 in the mounting groove 18 are movably connected, so that the reaction force of the compression spring 19 limits the friction force generated by the cylindrical brake shoe 20 and the first brake shoe 21, and the friction force is not enough to stop the rotation of the fan shaft 8, and the fan shaft 8 is in a half-rest state.

When wind power is too high and parts in the installation box 17 work in an overload mode, the temperature in the installation box 17 is too high and exceeds a certain dangerous set value of the temperature sensor 16, the motor 12 works again and rotates for 45 degrees, the position between the long shaft and the short shaft of the side wall of the cam 10 is abutted against the moving ring 15, the position is changed into that the long shaft is abutted against the side wall of the moving ring 15, so that the moving ring 15 continues to move, the second brake block 22 is abutted against the first brake block 21, large friction is generated, the fan shaft 8 stops rotating and is in a rest state, and the problem that the parts in the installation box 17 are damaged due to the fact that the temperature is too high is solved.

After the temperature is reduced, the motor 12 is turned over, the cam 10 is changed from the long axis contact to the short axis contact, the slide block 6 is far away from the first brake block 21 by the acting force of the tension spring 25, and the device continues to work by the external wind.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A temperature overload protection device for wind power generation comprises a support (2), a cylindrical installation box (17), a pair of bearings (9), a fan shaft (8), fan blades (1) and a power generation conversion unit (23), wherein a cavity (4) is formed in the installation box (17), the installation box (17) is fixedly installed at the upper end of the support (2), a through hole (24) is formed in the bottom surface of one side of the installation box (17), the fan shaft (8) is rotatably installed in the through hole (24) of the installation box (17) in a penetrating mode, the fan blades (1) are installed at one end, located outside the installation box (17), of the fan shaft (8), the other end of the fan shaft (8) is connected with the power generation conversion unit (23), the side wall of the fan shaft (8) located in the cavity (4) is rotatably connected with the inner wall of the installation box (17) through the pair of bearings (9), and the temperature overload protection device is characterized in that, the inner wall of the mounting box (17) and the mounting box (17) are coaxially provided with four sliding grooves (14), the four sliding grooves (14) are connected with four sliding blocks (6) in a sliding mode, the four sliding blocks (6) are connected with a moving ring (15) together, the side wall of one side of the moving ring (15) can be driven to move through a driving structure, the side wall of the other side of the moving ring (15) is provided with a second brake block (22), the side wall of the fan shaft (8) is provided with a first brake block (21), and the second brake block (22) connected with the moving ring (15) can drive the moving ring (15) to move through the driving structure to be attached to the first brake block (21); a temperature sensor (16) penetrates through the side wall of the mounting box (17); tension springs (25) are arranged on the side walls of the four sliding blocks (6) and the sliding groove (14) corresponding to one side of the driving structure.

2. The temperature overload protection device for wind power generation according to claim 1, wherein the driving structure comprises four motors (12), four rotating shafts (7) and four cams (10), the four motors (12) are uniformly installed on the outer wall of the installation box (17) for one circle, a through hole (11) is formed in the position, corresponding to the motor (12), of the installation box (17), the driving end of each motor (12) is connected with one end of each rotating shaft (7), each rotating shaft (7) penetrates through the through hole (11), the other end of each rotating shaft (7) is connected with the corresponding cam (10), and the side wall of each cam (10) is abutted to the side wall of the corresponding moving ring (15).

3. A temperature overload protection device for wind power generation according to claim 2, characterised in that the motor (12) is fixedly connected with the outer wall of the mounting box (17) through a mounting base (13).

4. A temperature overload protection device for wind power generation according to claim 2, characterised in that the motor (12) and the temperature sensor (16) are externally provided with a protective cover (5).

5. A temperature overload protection apparatus for wind power generation according to claim 1, wherein the second brake block (22) and the first brake block (21) are of a cone groove type and a cone shape which are engaged with each other.

6. The temperature overload protection device for wind power generation according to claim 1, wherein the moving ring (15) is provided with a plurality of mounting grooves (18) corresponding to the side walls for mounting the second brake blocks (22), compression springs (19) are arranged in the mounting grooves (18), the movable ends of the compression springs (19) are connected with cylindrical brake blocks (20) with the diameter smaller than that of the mounting grooves (18), and the cylindrical brake blocks (20) can abut against the first brake blocks (21) when the moving ring (15) moves.

7. A temperature overload protection device for wind power generation according to claim 1, characterised in that the outer ring of the bearing (9) is fixedly connected with the inner wall of the mounting box (17) by means of a fixing ring (3).