Split type brake of wind driven generator

Abstract

The utility model relates to the technical field of wind power generation braking, and discloses a split type brake of a wind driven generator, which comprises a shell I, one side of the shell I is rotatably connected with a shell II, and the shell I and the shell II are used for bearing the whole; the outer wall of the partition plate is fixedly connected to the interior of the second shell, and the partition plate is used for installing braking equipment; the outer wall of the brake disc is fixedly connected to the interior of the first shell, and the brake disc is used for braking; and one side of the first connecting plate is fixedly connected to the bottom of the partition plate. According to the wind driven generator, the three brakes are arranged in the second shell in a bilateral symmetry mode, the diameter of each brake is 90 mm, the friction coefficient is 0.4, the working pressure is 210 bar, and 95000 N is applied to a single friction plate in each brake, so that the effects of reducing noise and improving the power generation efficiency are achieved, the yawing and sliding phenomena of the wind driven generator are avoided, and the service life of the wind driven generator is prolonged. Therefore, the braking torque of the brake disc is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation brake technology field especially relates to a wind driven generator split type brake. BACKGROUND

[0002] The wind turbine generator set needs to rely on the braking system to realize safe shutdown, wind speed overrun protection and locking function under the maintenance state in the operation process, and the reliability of braking directly influences the operation stability and service life of the fan, and the brake of the wind driven generator usually comprises a brake disc, a brake caliper, a friction plate and a control system, is mainly used for providing resistance torque, controlling fan speed and preventing the yaw system from losing control under extreme wind speed conditions, along with the continuous increase of the single machine capacity of the wind turbine generator, the braking system needs to provide greater braking torque to meet higher safety and reliability requirements.

[0003] At present, the brake disc of the wind driven generator mainly adopts the integral structure, is usually made of high-strength alloy steel material and is connected on the cabin or the main shaft through the fixing bolt. The brake (such as hydraulic brake or electromagnetic brake) works with the brake disc, when braking is needed, the brake disc is clamped by the brake caliper, so that the fan is slowed down or stopped. Part of the wind turbine generator adopts the hydraulic braking system, and its working principle is that the hydraulic pressure pushes the piston to make the friction plate contact with the brake disc, thereby generating braking torque. Part of the wind turbine generator adopts electromagnetic braking, and the magnetic field generated by the electromagnetic coil attracts the brake piece, to realize the braking effect of the fan. These braking modes meet the operation demand of the fan to some extent, but still have many deficiencies.

[0004] However, the existing braking system is prone to yaw slippage in actual application, especially in the operation process of high-power fans, the stability of the yaw system directly influences the power generation efficiency of the whole machine. When the wind driven generator is in high wind speed working condition, if the braking torque of the brake disc is insufficient, the yaw system of the fan will slip, thereby generating huge noise and reducing the overall power generation efficiency. In addition, yaw slippage will affect the wind-aiming accuracy of the fan, increase additional mechanical loss and shorten the service life of the fan. Therefore, the existing technology still has optimization space in the braking torque of the fan brake disc and the reduction of operation noise, and there is an urgent need for a split type brake disc of the wind driven generator, which can effectively improve the braking force, reduce noise and improve power generation efficiency, to improve the operation stability and safety of the existing wind turbine generator. SUMMARY

[0005] In order to make up for the above deficiencies, the utility model provides a wind driven generator split type brake, aims at improving the yaw slippage phenomenon of the wind driven generator, which will generate huge noise and reduce the power generation efficiency.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a wind driven generator split type brake, including

[0007] The shell one side is rotatably connected with the shell two, and the shell one and the shell two are used for supporting the whole body.

[0008] The partition plate is fixedly connected to the inner wall of the shell two, and the partition plate is used for installing the brake device.

[0009] The brake disc is fixedly connected to the inner wall of the shell one, and the brake disc is used for braking.

[0010] The connecting plate one is fixedly connected to the bottom of the partition plate on one side, and the other side of the connecting plate one is fixedly connected with the brake, and the connecting plate one is used for combining the brake with the partition plate.

[0011] The connecting bolt is screw-connected in the partition plate, and the connecting bolt is screw-connected with the connecting plate two on the outer wall, and the connecting plate two is internally provided with a mounting hole, and the connecting plate two is used for connecting the brake with the partition plate.

[0012] As a further description of the above technical scheme:

[0013] The brake is internally provided with a clamping groove, and the brake is embedded with the brake disc through the clamping groove.

[0014] As a further description of the above technical scheme:

[0015] The length of the connecting bolt is 10.9mm, the tensile strength is not less than 1000MPa, and the shear strength is not less than 500Mpa.

[0016] As a further description of the above technical scheme:

[0017] The diameter of the brake is 90mm, the friction coefficient of the friction plate is 0.4, the working pressure is 210bar, the single friction plate applies 95000N, and each brake contains 4 pistons, which can provide 380000N of braking force.

[0018] As a further description of the above technical scheme:

[0019] The connecting bolt can install the brake with the partition plate by using the original parts of the fan.

[0020] As a further description of the above technical scheme:

[0021] The brake is symmetrically arranged on each side of the partition plate.

[0022] The utility model has the advantages of the following:

[0023] 1. In the utility model, first, three brake devices are symmetrically arranged in the shell two, each brake device has a diameter of 90mm, a friction coefficient of 0.4, a working pressure of 210bar, and a single friction plate in the brake device applies 95000N, each brake device contains four pistons and can provide a braking force of 380000N, thus achieving the effects of reducing noise and improving power generation efficiency, solving the problems of yaw slippage of the wind driven generator, huge noise and reduced power generation efficiency, and improving the braking torque of the brake disc.

[0024] 2. In the utility model, the connecting bolts are installed in the pre-set holes in the partition plate, then the second connecting plate is installed on the partition plate through the connecting bolts, and then the brake device is installed on the partition plate through the partition plate, so that the brake device is clamped on the outer wall of the brake disc through the clamping groove, thus achieving the effects of utilizing the original components of the fan and not expanding the hole of the engine room casting for installation, solving the problem of affecting the overall strength of the original equipment during installation of the brake device, and improving the practicability of the brake disc. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective view of a split brake device of a wind driven generator is provided for the utility model.

[0026] Figure 2 A brake disc structure diagram of a split brake device of a wind driven generator is provided for the utility model.

[0027] Figure 3 A connecting bolt structure diagram of a split brake device of a wind driven generator is provided for the utility model.

[0028] Figure 4 A partition plate structure diagram of a split brake device of a wind driven generator is provided for the utility model.

[0029] Figure 5 A second connecting plate structure diagram of a split brake device of a wind driven generator is provided for the utility model.

[0030] LEGEND:

[0031] 1. Shell one; 2. Shell two; 3. Brake disc; 4. Partition plate; 5. First connecting plate; 6. Brake device; 7. Second connecting plate; 8. Clamping groove; 9. Mounting hole; 10. Connecting bolt. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than 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.

[0033] With reference to Figures 1-5 An embodiment provided by the utility model: a split type brake of wind driven generator, comprising:

[0034] The shell one 1 one side is rotatably connected with the shell two 2, the shell one 1 and the shell two 2 are used to support the whole, so that the overall structure is more stable, and the protection ability to the brake disc 3 is improved in the use process, thereby prolonging the service life of the equipment;

[0035] The partition 4 outer wall is fixedly connected in the shell two 2, and the partition 4 is used to install the brake device, so that the brake 6 can be stably installed on the partition 4, and the partition 4 plays a fixed supporting role, ensures that the stress is uniform during braking, and improves the overall braking effect;

[0036] The brake disc 3 outer wall is fixedly connected in the shell one 1, and the brake disc 3 is used for braking, when the wind driven generator needs to stop running or adjust the speed, the brake 6 provides the braking torque by clamping the brake disc 3, so that precise shutdown control is realized, and the safety and reliability of the fan operation are improved;

[0037] The connecting plate one 5 one side is fixedly connected at the bottom of the partition 4, and the connecting plate one 5 other side is fixedly connected with the brake 6, and the connecting plate one 5 is used to combine the brake 6 with the partition 4, so that the brake 6 can be stably installed on the partition 4, avoiding loosening during braking, and improving the stability and safety of the braking system;

[0038] The brake 6 is used for clamping the brake disc 3 to brake, so that the wind driven generator can provide sufficient braking torque when emergency or speed adjustment is needed, the risk of fan drift is reduced, and the overall operation efficiency and safety are improved;

[0039] The connecting bolt 10 is screw connected in the partition 4, and the connecting bolt 10 outer wall is screw connected with the connecting plate two 7, and the connecting bolt 10 is used to firmly install the connecting plate two 7 on the partition 4, so that the connection between the brake 6 and the partition 4 is stable, is not affected by the vibration during the fan operation, and the reliability of the connecting part is improved;

[0040] The connecting plate two 7 is internally provided with a mounting hole 9, and is used for connecting the brake 6 and the partition plate 4, so that the brake 6 can be fixed on the partition plate 4 in a reasonable layout, thereby improving the overall stability of the brake system and preventing loosening or position deviation from affecting the braking effect;

[0041] The brake 6 is internally provided with a clamping groove 8, and is embedded with the brake disc 3 through the clamping groove 8, so that the brake 6 can accurately clamp the brake disc 3, thereby providing sufficient friction force when braking, improving the braking effect, and ensuring the safety and reliability of the fan during shutdown; the length of the connecting bolt 10 is 10.9 mm, the tensile strength is not less than 1000 MPa, and the shear strength is not less than 500 MPa, so that the connecting bolt 10 can still maintain high mechanical properties in a long-term high-strength operating environment, preventing fracture or deformation and ensuring the overall reliability of the brake system; the diameter of the brake 6 is 90 mm, the friction coefficient of the friction plate is 0.4, the working pressure is 210 bar, the single friction plate applies 95000 N, and each brake 6 contains four pistons, which can provide a braking force of 380000 N, so as to ensure that the brake 6 can provide sufficient braking torque, so that the fan can still operate stably in a strong wind environment and accurately shut down when necessary, improving the control accuracy and safety of the overall fan; the connecting bolt 10 can be used to install the brake 6 and the partition plate 4 by using the original parts of the fan, so that the brake system is more convenient to modify and maintain, avoiding the need to expand the hole of the fan cabin casting, thereby reducing the construction difficulty, improving the maintenance efficiency, reducing the influence on the original structure, and ensuring the long-term stable operation of the fan; the brake 6 is symmetrically arranged on each side of the partition plate 4, and is fixedly connected to one side of the partition plate 4, so that the stress of the brake 6 is more uniform, avoiding uneven wear or reduced braking effect caused by excessive unilateral stress, improving the stability and reliability of the brake system, thereby ensuring the safety and durability of the wind turbine during long-term operation.

[0042] Working principle: when the split brake of the wind turbine is used, first, the connecting bolt 10 is installed in the pre-set hole of the partition plate 4, then the connecting plate two 7 is installed on the partition plate 4 through the connecting bolt 10, and then the brake 6 is installed on the partition plate 4 through the partition plate 4, so that the brake 6 is clamped on the outer wall of the brake disc 3 through the clamping groove 8, achieving the effect of installing without expanding the hole of the cabin casting by using the original parts of the fan;

[0043] When the wind driven generator is braked, the three brakes 6 are symmetrically arranged in the shell 2, each brake 6 has a diameter of 90mm, a friction coefficient of 0.4, a working pressure of 210bar, a single friction plate in the brake 6 applies 95000N, and each brake 6 contains four pistons to provide a braking force of 380000N, the mounting bolt is a 10.9mm bolt with a tensile strength of not less than 1000MPa and a shear strength of not less than 500Mpa, so that the effect of reducing noise and improving power generation efficiency is achieved.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A wind power generator split brake, characterized in that, Include: The shell one (1), the shell one (1) one side rotatable connection has the shell two (2), the shell one (1) and shell two (2) are used for receiving the whole body; The partition (4), the partition (4) outer wall fixedly connected in the shell two (2) inside, the partition (4) is used for installing brake equipment; Brake disc (3), the brake disc (3) outer wall fixedly connected in the shell one (1) inside, the brake disc (3) is used for braking; The connecting plate one (5), the connecting plate one (5) one side fixedly connected in the partition (4) bottom, the other side of the connecting plate one (5) fixedly connected with brake (6), the connecting plate one (5) is used for combining brake (6) with partition (4), brake (6) is used for clamping brake disc (3) and braking; Connecting bolt (10), the connecting bolt (10) is screwed in the partition (4) inside, the connecting bolt (10) outer wall screw connection has the connecting plate two (7), the connecting plate two (7) inside is equipped with mounting hole (9), the connecting plate two (7) is used for connecting brake (6) with partition (4).

2. A split brake for a wind turbine generator according to claim 1, wherein: The brake (6) is equipped with the clamping groove (8) inside, the brake (6) is embedded with brake disc (3) through the clamping groove (8).

3. A split brake for a wind turbine generator according to claim 1, wherein: The length of the connecting bolt (10) is 10.9mm, the tensile strength is not less than 1000MPa, and the shear strength is not less than 500Mpa.

4. The split brake for a wind turbine generator according to claim 1, wherein: The brake (6) diameter 90mm, friction plate friction coefficient 0.4, working pressure 210bar, single friction plate 95000N, each brake (6) contains 4 pistons, can provide 380000N brake force.

5. The split brake for a wind turbine generator according to claim 1, wherein: The connecting bolt (10) can install brake (6) and partition (4) by using the original parts of the fan.

6. A split brake for a wind turbine generator according to claim 1, wherein: The brake (6) is symmetrically arranged every side 3 fixedly connected in the partition (4) one side.

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