CN211666844U

CN211666844U - Wind power generation yaw brake

Info

Publication number: CN211666844U
Application number: CN201920775808.5U
Authority: CN
Inventors: 张羽; 李明; 程学文; 刘志文; 徐志轩; 李致尧
Original assignee: Datang Renewable Energy Test And Research Institute Co ltd
Current assignee: Datang Renewable Energy Test And Research Institute Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-10-13
Anticipated expiration: 2029-05-27

Abstract

The utility model belongs to the technical field of the wind power generation technique and specifically relates to a wind power generation yaw brake, including the oil tank, the hydraulic pump, lead to oil pipe, the braking piece, a rectangular block, No. two rectangular blocks and support frame, the top of oil tank is equipped with the hydraulic pump, the one end that leads to oil pipe is connected with the one end of oil tank, carry hydraulic oil to pressing the oil chamber from the oil tank through the hydraulic pump, thereby promote a rectangular block right side motion mutually, die the braking piece card between a rectangular block and No. two rectangular blocks, owing to used hydraulic system, the energy consumption has been reduced, under the minimum energy of use, the biggest effect has been realized, the effect of braking has been guaranteed.

Description

Wind power generation yaw brake

Technical Field

The utility model belongs to the technical field of the wind power generation technique and specifically relates to a wind power generation driftage stopper.

Background

When wind power is too large, the existing fan yaw brake has high fan blade rotating speed, and when the speed reaches a certain value, a fan cannot be stopped, runaway is easy to happen, and the fan yaw brake can be damaged. Most of fan yaw brakes in the market usually adopt spring braking, so that the energy consumption is high, the maintenance is expensive, and the braking effect is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve fan yaw brake on the market, the majority adopts spring braking usually, and the power consumption is high, and the maintenance is expensive, the not good problem of braking effect moreover, the utility model provides a wind power generation yaw brake carries hydraulic oil to pressing the oil chamber from the oil tank through the hydraulic pump to promote a rectangular block relative right movement, die the braking piece card between a rectangular block and No. two rectangular blocks, owing to used hydraulic system, reduced the energy consumption, under the minimum energy of use, realized the biggest effect, guaranteed the effect of braking.

In order to solve current fan yaw brake when wind-force is too big, fan blade slew velocity is fast, when speed reaches a definite value, can't make the fan stop, take place the driving easily, fan yaw brake can take place the problem of damage, the utility model provides a wind power generation yaw brake, through setting up driftage control system, gather fan pivoted speed, when speed reaches a definite value, the starter motor, the worm drives the disc motion, and then makes hydraulic oil flow into balanced chamber, and the motion makes blade surface and wind direction perpendicular, treats the automatic decline back of the slew velocity of blade, starts driftage arrestment mechanism, and the effectual equipment that has reduced the blade and caused because of the driving damages, has improved the life of fan.

The utility model provides a technical scheme that its technical problem adopted is: a wind power generation yaw brake comprises a yaw brake mechanism and a yaw control mechanism, wherein one end of the yaw brake mechanism is connected with one end of the yaw control mechanism;

the yaw brake mechanism comprises an oil tank, a hydraulic pump, an oil pipe, a brake block, a first rectangular block, a second rectangular block, a support frame and a pressure oil cavity, wherein the hydraulic pump is arranged above the oil tank, one end of the oil pipe is connected with one end of the oil tank, the other end of the oil pipe is connected with one end of the hydraulic pump, the first rectangular block is arranged above the brake block, the second rectangular block is arranged below the brake block, the pressure oil cavity is arranged below the second rectangular block, the brake block is arranged above the second rectangular block, and the support frame is arranged below the brake block;

the yaw control mechanism comprises a motor, a worm, a disc, hydraulic oil, a fan head, blades, a balance cavity and an execution cavity, wherein one end of the motor is fixedly connected with the worm, the inner surface of the disc is movably connected with the outer surface of the worm, the hydraulic oil is arranged in the balance cavity, the motor is arranged in the fan head, one end of each blade is fixedly connected with one end of the fan head, the balance cavity is arranged on one side of the bottom end of each blade, and the execution cavity is arranged on the other side of the bottom end of each blade;

the outer shaft diameter of the worm is matched with the inner shaft diameter of the disc, and the outer shaft diameter of the second rectangular block is matched with the shaft diameter in the oil pressing cavity.

Specifically, the inside of the disc is provided with a threaded through hole.

Specifically, the motor and the worm are on the same axis.

Specifically, the oil pipes are divided into two groups.

Further, the material of the brake pad is No. 45 steel, the material of the first rectangular block is rubber, and the material of the second rectangular block is rubber.

Furthermore, the first rectangular block is cylindrical in structural shape, and the second rectangular block is cylindrical in structural shape.

The utility model has the advantages that: the utility model provides a wind power generation yaw brake, through the hydraulic pump with hydraulic oil from the oil tank to press the oil chamber to promote No. two rectangular blocks to move upward, die the braking piece card between No. one rectangular block and No. two rectangular blocks, owing to used hydraulic system, reduced the energy consumption, under using the minimum energy, realized the biggest effect, guaranteed the effect of braking; through setting up driftage control system, gather fan pivoted speed, when speed reaches a definite value, starter motor, worm drive disc motion, and then make hydraulic oil flow into balanced chamber, and the motion makes blade surface perpendicular with the wind direction, treats the automatic decline back of the slew velocity of blade, starts driftage arrestment mechanism, and the effectual blade that has reduced has improved the life of fan because of the equipment damage that the driving caused.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a wind power yaw brake of the present invention.

Fig. 2 is a schematic structural view of a yaw braking mechanism of a wind power generation yaw brake of the present invention.

Fig. 3 is a schematic structural view of a yaw control mechanism of a yaw brake for wind power generation according to the present invention. In the figure: 1. a yaw brake mechanism; 2. a yaw control mechanism; 11. an oil tank; 12. a hydraulic pump; 13. an oil pipe is communicated; brake pads; 15. a first rectangular block; 16. a second rectangular block; 17. a support frame; 18. pressing an oil cavity; 21. a motor; 22. a worm; 23. a disc; 24. hydraulic oil; 25. a blower head; 26. a blade; 27. a balancing chamber; 28. the execution chamber.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-3, a wind power generation yaw brake comprises a yaw brake mechanism 1 and a yaw control mechanism 2, wherein one end of the yaw brake mechanism 1 is connected with one end of the yaw control mechanism 2; the yaw brake mechanism 1 comprises an oil tank 11, a hydraulic pump 12, an oil through pipe 13, a brake block 14, a first rectangular block 15, a second rectangular block 16, a support frame 17 and a pressure oil cavity 18, wherein the hydraulic pump 12 is arranged above the oil tank 11, one end of the oil through pipe 13 is connected with one end of the oil tank 11, the other end of the oil through pipe 13 is connected with one end of the hydraulic pump 12, the first rectangular block 15 is arranged above the brake block 14, the second rectangular block 16 is arranged below the brake block 14, the pressure oil cavity 18 is arranged below the second rectangular block 16, the brake block 14 is arranged above the second rectangular block 16, and the support frame 17 is arranged below the brake block 14; the yaw control mechanism 2 comprises a motor 21, a worm 22, a disc 23, hydraulic oil 24, a fan head 25, blades 26, a balance cavity 27 and an execution cavity 28, one end of the motor 21 is fixedly connected with the worm 22, the inner surface of the disc 23 is movably connected with the outer surface of the worm 22, the hydraulic oil 24 is arranged in the balance cavity 27, the motor 21 is arranged in the fan head 25, one end of each blade 26 is fixedly connected with one end of the fan head 25, the balance cavity 27 is arranged on one side of the bottom end of each blade 26, and the execution cavity 28 is arranged on the other side of the bottom end of each blade 26; the outer shaft diameter of the worm 22 is matched with the inner shaft diameter of the disc 23, and the outer shaft diameter of the second rectangular block 16 is matched with the inner shaft diameter of the oil pressing cavity 18.

Preferably, the disc 23 is internally provided with a threaded through hole.

Wherein the motor 21 is on the same axis as the worm 22.

Wherein the oil pipes 13 have two groups.

Preferably, the brake pad 14 is made of 45 steel, the first rectangular block 15 is made of rubber, and the second rectangular block 16 is made of rubber.

The first rectangular block 15 is cylindrical in structural shape, and the second rectangular block 16 is cylindrical in structural shape.

During the use, operating personnel starts motor 21, motor 21 drives worm 22 and moves left, and worm 22 drives disc 23 and moves left, and then impels hydraulic oil 24 to flow into to balanced chamber 27 inside, realizes the effect of pressing oil, because the right side pressure of disc 23 reduces, and then impels hydraulic oil 24 to flow out from the execution chamber 28 inside, realizes the effect of inhaling oil, because the pressure variation in balanced chamber 27 and the execution chamber 28, impels blade 26 to turn into balanced direction from the direction of deflection, makes blade 26 surface and wind direction perpendicular, and then reduces fan slew velocity.

When the speed is reduced to a certain value, an operator starts the hydraulic pump 12, so that the hydraulic oil in the oil tank 11 flows into the oil pressing cavity 18 from the inside of the oil tank 11, the second rectangular block 16 is pushed to move upwards, and the brake piece 14 is clamped.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A wind power generation yaw brake comprises a yaw brake mechanism (1) and a yaw control mechanism (2), wherein one end of the yaw brake mechanism (1) is connected with one end of the yaw control mechanism (2), and the wind power generation yaw brake is characterized in that:

the yaw brake mechanism (1) comprises an oil tank (11), a hydraulic pump (12), an oil through pipe (13), a brake block (14), a first rectangular block (15), a second rectangular block (16), a support frame (17) and a pressure oil cavity (18), wherein the hydraulic pump (12) is arranged above the oil tank (11), one end of the oil through pipe (13) is connected with one end of the oil tank (11), the other end of the oil through pipe (13) is connected with one end of the hydraulic pump (12), the first rectangular block (15) is arranged above the brake block (14), the second rectangular block (16) is arranged below the brake block (14), the pressure oil cavity (18) is arranged below the second rectangular block (16), the brake block (14) is arranged above the second rectangular block (16), and the support frame (17) is installed below the brake block (14);

the yaw control mechanism (2) comprises a motor (21), a worm (22), a disc (23), hydraulic oil (24), a fan head (25), blades (26), a balance cavity (27) and an execution cavity (28), one end of the motor (21) is fixedly connected with the worm (22), the inner surface of the disc (23) is movably connected with the outer surface of the worm (22), the hydraulic oil (24) is arranged in the balance cavity (27), the motor (21) is arranged in the fan head (25), one end of each blade (26) is fixedly connected with one end of the fan head (25), the balance cavity (27) is arranged on one side of the bottom end of each blade (26), and the execution cavity (28) is arranged on the other side of the bottom end of each blade (26);

the outer shaft diameter of the worm (22) is matched with the inner shaft diameter of the disc (23), and the outer shaft diameter of the second rectangular block (16) is matched with the inner shaft diameter of the oil pressing cavity (18).

2. A wind power yaw brake as claimed in claim 1, wherein: the disc (23) is internally provided with a threaded through hole.

3. A wind power yaw brake as claimed in claim 1, wherein: the motor (21) and the worm (22) are on the same axis.

4. A wind power yaw brake as claimed in claim 1, wherein: the oil pipes (13) are divided into two groups.

5. A wind power yaw brake as claimed in claim 1, wherein: the brake block (14) is made of 45-grade steel, the first rectangular block (15) is made of rubber, and the second rectangular block (16) is made of rubber.

6. A wind power yaw brake as claimed in claim 1, wherein: the structural shape of the first rectangular block (15) is a cylinder, and the structural shape of the second rectangular block (16) is a cylinder.