Ventilation waterproof device for yaw motor of wind turbine generator

Abstract

The utility model discloses a ventilation waterproof device for a yaw motor of a wind turbine generator system, which comprises a waterproof cover, a plurality of support assemblies and a locking device, the waterproof cover is arranged above a motor fan blade cover at the top of the yaw motor through the plurality of support assemblies, and the plurality of support assemblies are distributed in a circumferential array at the top of the motor fan blade cover. Each supporting assembly is connected with the motor fan blade cover through a locking device. According to the yaw motor fan blade cover, rainwater can be effectively prevented from entering the yaw motor electromagnetic band-type brake through the yaw motor fan blade cover, and the reliability of yaw driving operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproofing of a yaw motor of a wind turbine generator set, in particular to a ventilation and waterproofing device for a yaw motor of a wind turbine generator set. Background Art

[0002] During the operation of a wind turbine, if rainwater enters the upper platform of the cabin, it can easily pass through the yaw motor blade cover and into the electromagnetic brake of the yaw motor. In mild cases, the braking performance of the electromagnetic brake will be reduced. In severe cases, the electromagnetic brake will rust or freeze due to the accumulated water, and the electromagnetic brake will not operate, causing damage to the yaw drive. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a ventilation and waterproof device for the yaw motor of a wind turbine, which can effectively prevent rainwater from entering the electromagnetic brake of the yaw motor through the yaw motor blade cover and improve the reliability of the yaw drive operation.

[0004] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0005] A ventilation and waterproof device for a yaw motor of a wind turbine generator, comprising a waterproof cover, a plurality of support assemblies and a locking device. The waterproof cover is mounted above the motor fan blade cover on top of the yaw motor through the plurality of support assemblies, and the plurality of support assemblies are distributed in a circular array on top of the motor fan blade cover, and each support assembly is connected to the motor fan blade cover via a locking device.

[0006] Furthermore, the waterproof cover includes a waterproof cover body and a plurality of L-shaped connecting rods distributed in a circular array on the bottom surface of the waterproof cover body. The number of the L-shaped connecting rods is consistent with the number of support components and corresponds one to one. The bottom of each L-shaped connecting rod is connected to the top of the support component by a bolt.

[0007] Furthermore, the covering area of the waterproof cover body is larger than the top area of the yaw motor.

[0008] Furthermore, the waterproof cover body is disc-shaped or cone-shaped.

[0009] Furthermore, the support assembly includes an upper L-shaped support rod, a lower L-shaped support rod and a self-locking nut, and the two side edges of the upper L-shaped support rod are respectively processed with through holes for installing bolts, and one side thereof is connected to the L-shaped connecting rod of the waterproof cover through the through holes, and the two side edges of the lower L-shaped support rod are respectively processed with through holes and long waist-shaped holes for installing bolts, and a self-locking nut is welded on one side of the lower L-shaped support rod with the through hole, and the other side of the upper L-shaped support rod is connected to the long waist-shaped hole of the lower L-shaped support rod through the through hole, and the overlapping height of the upper L-shaped support rod and the lower L-shaped support rod can be adjusted through the long waist-shaped hole, and the other side of the lower L-shaped support rod is connected to the motor fan blade cover through the through hole.

[0010] Furthermore, the locking device includes a fastening bolt and a gasket, and the fastening bolt passes through the gasket, the mesh of the motor fan cover and the through hole of the lower L-shaped support rod of the support assembly in sequence and then cooperates with the self-locking nut of the lower L-shaped support rod to be connected.

[0011] Furthermore, the fastening bolts of the locking device are coated with thread glue.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] 1. The ventilation and waterproof device of the present invention has a simple overall structure and can effectively prevent rainwater from entering the electromagnetic brake of the yaw motor through the yaw motor blade cover.

[0014] 2. The ventilation and waterproof device of the utility model can be manually fixed in the cabin using bolts, without the need for thermal work or electricity. It is safe and simple, with high installation efficiency and low maintenance cost, and each component can be easily replaced after being damaged.

[0015] 3. With the ventilation and waterproof device of the utility model, when a heavy object above the yaw motor falls, the impact point falls on the ventilation and waterproof device instead of directly acting on the yaw motor, which effectively protects the yaw motor fan cover and housing from plastic deformation caused by external force (heavy object impact), thereby extending the service life of the yaw motor.

[0016] 4. The shape and size of the waterproof cover of the utility model can be adjusted according to the space around the yaw motor, and can be adapted to yaw motors of various models and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the ventilation and waterproof device.

[0018] Figure 2 Schematic diagram of the structure of the support component.

[0019] Figure 3 Schematic diagram of the connection between the support assembly and the L-shaped connecting rod.

[0020] Figure 4 Schematic diagram of the waterproof cover Figure 1 .

[0021] Figure 5 Schematic diagram of the waterproof cover Figure 2 .

[0022] Figure 6 This is a schematic diagram of the connection between the ventilation and waterproof device and the motor fan cover. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example:

[0025] like Figures 1 to 6 As shown, this embodiment provides a ventilation and waterproof device for the yaw motor of a wind turbine, including a waterproof cover 1, multiple support components 2 and a locking device 3. The waterproof cover 1 is installed above the motor fan blade cover 5 on the top of the yaw motor 4 through multiple support components 2, and the multiple support components 2 are distributed in a circular array on the top of the motor fan blade cover 5. This embodiment takes three as an example, which are distributed at 120° to each other, and each support component 2 is connected to the motor fan blade cover 5 through a locking device 3.

[0026] Specifically, the waterproof cover 1 includes a waterproof cover body and a plurality of L-shaped connecting rods 101 distributed in a circular array on the bottom surface of the waterproof cover body. The number of L-shaped connecting rods 101 is consistent with the number of support assemblies 2 and corresponds one to one. The bottom of each L-shaped connecting rod 101 is connected to the top of the support assembly 2 by a bolt.

[0027] Furthermore, the waterproof cover body is disc-shaped or cone-shaped, and its shape and size can be adjusted according to the space around the yaw motor 4, so that it can adapt to yaw motors 4 of various models and specifications. It only needs to ensure that the covering area of the waterproof cover body is larger than the top area of the yaw motor.

[0028] Specifically, the support assembly 2 includes an upper L-shaped support rod 201, a lower L-shaped support rod 202 and a self-locking nut 203. The two side edges of the upper L-shaped support rod 201 are respectively processed with through holes for installing bolts, and one side thereof is connected to the L-shaped connecting rod 101 through the through holes. The two side edges of the lower L-shaped support rod are respectively processed with through holes and long waist-shaped holes 2021 for installing bolts, and a self-locking nut 203 is welded on one side of the lower L-shaped support rod with the through hole. The other side of the upper L-shaped support rod 201 is connected to the long waist-shaped hole 2021 of the lower L-shaped support rod 202 through the through hole. The overlapping height of the upper L-shaped support rod 201 and the lower L-shaped support rod 202 can be adjusted through the long waist-shaped hole. The other side of the lower L-shaped support rod 202 is connected to the motor fan blade cover 5 through the through hole.

[0029] Specifically, the locking device 3 includes a fastening bolt 301 and a washer 302. The fastening bolt 301 is sequentially passed through the washer, the mesh of the motor fan cover 5, and the through hole of the lower L-shaped support rod 202, and then connected with the self-locking nut 203. To further ensure the connection effect, thread glue can be applied to the fastening bolt.

[0030] The installation process of the above ventilation and waterproof device is as follows:

[0031] S1. Remove the motor fan cover 5 of the yaw motor 4 and clean the filter of the motor fan cover 5;

[0032] S2. Connect and fix the L-shaped connecting rod 101 and the upper L-shaped supporting rod 201 with bolts;

[0033] S3. Adjust the overlap height of the upper L-shaped support rod and the lower L-shaped support rod according to the space above the yaw motor, and fix the two support rods with bolts;

[0034] S4, attaching the assembled support assembly 2 to the motor fan cover 5;

[0035] S5. Apply thread sealant to the fastening bolts and fix the support assembly 2 and the locking device 3 together;

[0036] S6. Install the motor fan cover 5 with ventilation and waterproof device on the yaw motor 4;

[0037] S7. Open the electromagnetic brake of the yaw motor 4, manually rotate the yaw motor 4, and confirm that the blades of the yaw motor 4 have no impact on the locking device 3. The installation is completed.

[0038] During the above installation process, manpower and wrenches can meet the installation requirements without the need for thermal work. The height of the support assembly is adjustable, which can adapt to the narrow and inclined space under the main engine platform. The direction of the support assembly can be rotated 360 degrees, which has the advantages of flexibility and variability, and can adapt to various height spaces and various models of yaw motors.

[0039] The above is only a preferred embodiment of the present utility model patent, but the protection scope of the present utility model patent is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present utility model patent based on the technical solution and the utility model patent concept of the present utility model patent, which falls within the protection scope of the present utility model patent.

Claims

1. A ventilation and waterproof device for a yaw motor of a wind turbine, characterized by: It includes a waterproof cover, multiple support components and a locking device. The waterproof cover is installed above the motor fan blade cover on the top of the yaw motor through multiple support components, and the multiple support components are distributed in a circular array on the top of the motor fan blade cover. Each support component is connected to the motor fan blade cover through a locking device.

2. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 1, characterized in that: The waterproof cover includes a waterproof cover body and a plurality of L-shaped connecting rods distributed in a circular array on the bottom surface of the waterproof cover body. The number of the L-shaped connecting rods is consistent with the number of support components and corresponds one to one. The bottom of each L-shaped connecting rod is connected to the top of the support component by a bolt.

3. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 2, characterized in that: The covering area of the waterproof cover body is larger than the top area of the yaw motor.

4. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 2, characterized in that: The waterproof cover body is disc-shaped or cone-shaped.

5. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 1, characterized in that: The support assembly includes an upper L-shaped support rod, a lower L-shaped support rod and a self-locking nut, and the two side edges of the upper L-shaped support rod are respectively processed with through holes for installing bolts, and one side thereof is connected to the L-shaped connecting rod of the waterproof cover through the through hole, and the two side edges of the lower L-shaped support rod are respectively processed with through holes and long waist-shaped holes for installing bolts, and a self-locking nut is welded on the side of the lower L-shaped support rod with the through hole, and the other side of the upper L-shaped support rod is connected to the long waist-shaped hole of the lower L-shaped support rod through the through hole, and the overlapping height of the upper L-shaped support rod and the lower L-shaped support rod can be adjusted through the long waist-shaped hole, and the other side of the lower L-shaped support rod is connected to the motor fan blade cover through the through hole.

6. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 1, characterized in that: The locking device includes a fastening bolt and a gasket, and the fastening bolt passes through the gasket, the mesh of the motor fan cover and the through hole of the lower L-shaped support rod of the support assembly in sequence and then cooperates with the self-locking nut of the lower L-shaped support rod to be connected.

7. The ventilation and waterproof device for a yaw motor of a wind turbine according to claim 6, characterized in that: The fastening bolts of the locking device are coated with thread glue.

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