Novel bearing sealing element for wind power yaw

Abstract

The utility model relates to the technical field of bearing sealing elements, and discloses a novel bearing sealing element for wind power yawing, which comprises a yawing bearing outer ring, a yawing bearing inner ring is arranged on the inner side of the yawing bearing outer ring, yawing teeth are arranged on the edge of the outer side of the yawing bearing outer ring, and the yawing teeth are arranged on the yawing bearing outer ring. Sealing pieces are arranged on the left side and the right side of the yaw bearing outer ring and the left side and the right side of the yaw bearing inner ring correspondingly, sealing cover plates are arranged on one sides of the two sealing pieces, six first connecting holes are formed in each of the two sealing cover plates, six second connecting holes are formed in each of the two sealing pieces, and the first connecting holes are communicated with the second connecting holes. And one sides of the two sealing cover plates penetrate through the first connecting holes and the second connecting holes through six fastening bolts and are in threaded connection with one side wall of the yaw bearing inner ring. According to the utility model, the sealing element is arranged, and the sealing element consists of the elastic layer, the reinforcing layer and the corrosion-resistant layer, so that the service life of the sealing element is prolonged by utilizing the mutual matching effect among the elastic layer, the reinforcing layer and the corrosion-resistant layer.

Description

Technical Field

[0001] This utility model relates to the field of bearing seal technology, specifically a novel bearing seal for wind turbine yaw. Background Technology

[0002] The yaw system is a core subsystem of a wind turbine generator set. Its core function is to adjust the direction of the turbine nacelle in real time so that the blades always face the wind, thereby maximizing wind energy capture and ensuring stable operation of the unit. The yaw bearing is one component of the wind turbine yaw system, and the seals are a component of the yaw bearing.

[0003] Existing bearing seals used for wind turbine yaw have weak structural strength and poor corrosion resistance, resulting in a short service life. Therefore, there is an urgent need for a new type of bearing seal for wind turbine yaw to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a novel bearing seal for wind turbine yaw, in order to solve the problem mentioned in the background art that the existing bearing seals for wind turbine yaw have weak structural strength and poor corrosion resistance, resulting in a short service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel bearing seal for wind turbine yaw protection includes a yaw bearing outer ring, an inner yaw bearing inner ring on the inner side of the outer ring, yaw teeth on the outer edge of the outer ring, and seals on both sides of the outer and inner rings. A sealing cover is provided on one side of each seal, with six first connecting holes on each cover and six second connecting holes on each seal. Six fastening bolts pass through the first and second connecting holes and are threadedly connected to one side wall of the inner ring of the yaw bearing on one side of each cover. The seal comprises an elastic layer, a reinforcing layer, and a corrosion-resistant layer, with the reinforcing layer located between the elastic and corrosion-resistant layers. The elastic layer contacts the sealing cover, and the seal faces the contact point between the outer and inner rings of the yaw bearing.

[0007] In a preferred embodiment of this invention, the second connecting hole and the first connecting hole are directly opposite each other, and both have the same diameter.

[0008] In a preferred embodiment of this invention, both the second connecting hole and the first connecting hole are optical holes.

[0009] As a preferred embodiment of this invention, the elastic layer is made of hydrogenated nitrile rubber.

[0010] As a preferred embodiment of this invention, the reinforcing layer is made of aramid fiber.

[0011] As a preferred embodiment of this invention, the corrosion-resistant layer is made of polytetrafluoroethylene.

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

[0013] This invention improves the service life of a sealing element by incorporating a sealing element composed of an elastic layer, a reinforcing layer, and a corrosion-resistant layer, and by utilizing the synergistic effect between these layers. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the outer ring and inner ring of the yaw bearing of this utility model;

[0017] Figure 3 This is a side sectional view of the present invention.

[0018] Figure 4 This is a side view of the structure of this utility model;

[0019] Figure 5 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the sealing element of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the sealing cover plate of this utility model.

[0022] In the diagram: 1. Outer ring of yaw bearing; 2. Inner ring of yaw bearing; 3. Yaw gear; 4. Sealing cover plate; 5. Seal; 6. Fastening bolt; 7. First connecting hole; 8. Elastic layer; 9. Reinforcing layer; 10. Corrosion resistant layer; 11. Second connecting hole. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0024] Please see Figure 1-7 A novel bearing seal for wind turbine yaw protection includes a yaw bearing outer ring 1, an inner yaw bearing 2 on the inner side of the outer ring 1, yaw teeth 3 on the outer edge of the outer ring 1, and seals 5 on both sides of the outer and inner rings 1 and 2. A sealing cover 4 is provided on one side of each seal 5. Each sealing cover 4 has six first connecting holes 7 and six second connecting holes 11. Six fastening bolts 6 pass through the first connecting holes 7 and second connecting holes 11 and are threadedly connected to one side wall of the inner ring 2. The seal 5 consists of an elastic layer 8, a reinforcing layer 9, and a corrosion-resistant layer 10. The reinforcing layer 9 is located between the elastic layer 8 and the corrosion-resistant layer 10. The elastic layer 8 is in contact with the sealing cover 4. The seal 5 is positioned directly opposite the contact point between the outer and inner rings 1 and 2 of the yaw bearing.

[0025] The second connecting hole 11 is directly opposite the first connecting hole 7, and the two have the same diameter.

[0026] Both the second connecting hole 11 and the first connecting hole 7 are light holes.

[0027] The elastic layer 8 is made of hydrogenated nitrile rubber.

[0028] The reinforcing layer 9 is made of aramid fiber.

[0029] The corrosion-resistant layer 10 is made of polytetrafluoroethylene.

[0030] The working principle and usage process of this utility model are as follows: First, when sealing the contact point between the outer ring 1 and the inner ring 2 of the yaw bearing, the sealing element 5 is placed directly opposite the contact point between the outer ring 1 and the inner ring 2 of the yaw bearing and tightly covers it. Then, the sealing cover plate 4 is placed on the outside of the sealing element 5. Afterwards, the sealing cover plate 4 is threadedly connected to one side wall of the inner ring 2 of the yaw bearing by six fastening bolts 6, each passing through the corresponding first connecting hole 7 and second connecting hole 11, thereby achieving a seal. By setting the sealing element 5, which is composed of an elastic layer 8, a reinforcing layer 9, and a corrosion-resistant layer 10, the elastic layer 8 is made of hydrogenated nitrile rubber, the reinforcing layer 9 is made of aramid fiber, and the corrosion-resistant layer 10 is made of polytetrafluoroethylene. The mutual cooperation between the elastic layer 8, the reinforcing layer 9, and the corrosion-resistant layer 10 enhances the structural strength and corrosion resistance, thereby improving the service life of the sealing element. The contents not described in detail in this description belong to the prior art known to those skilled in the art.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A new type of bearing seal for wind power yawing, comprising a yaw bearing outer ring (1), characterized in that: The inner side of the yaw bearing outer ring (1) is provided with a yaw bearing inner ring (2), the outer edge of the yaw bearing outer ring (1) is provided with a yaw tooth (3), the left and right sides of the yaw bearing outer ring (1) and the yaw bearing inner ring (2) are provided with a sealing element (5), one side of the two sealing elements (5) is provided with a sealing cover plate (4), six first connecting holes (7) are formed in the two sealing cover plates (4), six second connecting holes (11) are formed in the two sealing elements (5), and the sealing cover plates (4) are connected with the side wall of the yaw bearing inner ring (2) through six fastening bolts (6) penetrating the first connecting holes (7) and the second connecting holes (11) on one side of the two sealing cover plates (4), the sealing element (5) is composed of an elastic layer (8), a reinforcing layer (9) and a corrosion-resistant layer (10), the reinforcing layer (9) is located between the elastic layer (8) and the corrosion-resistant layer (10), the elastic layer (8) is in contact with the sealing cover plate (4), and the sealing element (5) is opposite to the contact position of the yaw bearing outer ring (1) and the yaw bearing inner ring (2).

2. A new type of bearing seal for wind power yawing according to claim 1, characterized in that: The second connecting hole (11) is opposite to the first connecting hole (7) and has the same diameter.

3. A new type of bearing seal for wind power yawing according to claim 1, characterized in that: The second connecting hole (11) and the first connecting hole (7) are both light holes.

4. A new type of bearing seal for wind power yawing according to claim 1, characterized in that: The material of the elastic layer (8) is hydrogenated nitrile rubber.

5. A new type of bearing seal for wind power yawing according to claim 1, characterized in that: The material of the reinforcing layer (9) is aramid fiber.

6. A new type of bearing seal for wind power yawing according to claim 1, characterized in that: The material of the corrosion-resistant layer (10) is polytetrafluoroethylene.

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