Yaw collector ring

Abstract

The utility model relates to a yaw collector ring, which comprises a rotor assembly and is characterized by further comprising a cover body, a top cover and a sealing assembly, and the near end of the rotor assembly extends into the cover body; the top cover is arranged on the rotor assembly at the far end of the cover body; the sealing assembly comprises a sealing piece arranged between the cover body and the rotor assembly and a water retaining ring arranged at the far end of the cover body, and the far end of the water retaining ring extends into the top cover. The far end of the water retaining ring extends into the top cover, so that the near end of the top cover is lower than the far end of the water retaining ring, and rainwater permeating along the near end of the top cover is blocked by the water retaining ring. And the sealing element further ensures the sealing performance of the cover body. When flowing to the joint of the cover body and the top cover, outside rainwater is blocked by the water retaining ring and the sealing piece, so that the internal structure is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of generator yaw collector rings, in particular to a yaw collector ring. Background Art

[0002] With the continuous development of wind power generation systems in my country, the wind power industry has higher requirements for the reliability and power generation efficiency of wind turbines. As one of the most important components of wind turbines, the yaw collector ring has been widely used. As a type of collector ring, the yaw collector ring has gradually gained favor among users.

[0003] Wind turbines need to be installed in open areas with sufficient wind, no obstacles, and no interference from buildings, trees, etc., and are generally far away from cities and densely populated areas. The special working environment makes the yaw collector rings installed in the wind turbines susceptible to the influence of the external environment, especially the part of the rotor assembly extending out of the yaw collector ring outer cover. In the prior art, a top cover is usually provided on the rotor assembly extending out of the yaw collector ring outer cover to protect the rotor assembly, but the rotor has a rotational motion relative to the yaw collector ring outer cover, and a large gap is left between the top cover and the yaw collector ring outer cover, which cannot well protect the internal rotor assembly and stator assembly. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a yaw collector ring to better protect the internal structure of the yaw collector ring.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A yaw collector ring includes a rotor assembly, a cover body, a top cover and a sealing assembly, wherein:

[0007] The proximal end of the rotor assembly extends into the interior of the cover body;

[0008] The top cover is disposed on the rotor assembly at the distal end of the cover body;

[0009] The sealing assembly comprises a sealing member arranged between the cover body and the rotor assembly, and a water retaining ring arranged at the distal end of the cover body, wherein the distal end of the water retaining ring extends into the top cover.

[0010] Further, the rotor assembly comprises a horizontally arranged positioning plate, a vertical side surface of the positioning plate contacts the cover body, an extension portion extends circumferentially from the positioning plate, and a proximal end of the extension portion contacts the cover body.

[0011] Furthermore, the sealing member includes a first sealing ring disposed between the cover body and the positioning plate, and a second sealing ring disposed between the cover body and the water retaining ring.

[0012] Furthermore, a third sealing ring is embedded in the proximal end of the extension portion, and the proximal end of the third sealing ring abuts against the cover body.

[0013] Furthermore, at least three positioning bearings are arranged on the cover body, and the positioning bearings are rotatably pressed against the rotor assembly.

[0014] Furthermore, a retaining ring is provided at the proximal end of the vertical side surface of the positioning plate, the outer side of the retaining ring abuts against the positioning bearing, and the distal end of the retaining ring abuts against the sealing assembly.

[0015] Further, the proximal end of the rotor assembly is rotatably connected to the cover body.

[0016] Furthermore, a plurality of louver holes are provided on the cover body and the top cover.

[0017] Furthermore, a wiring cover is extended from the side of the cover body.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0019] (1) A yaw collector ring in the utility model has a water retaining ring between the cover body and the top cover, and a sealing member between the cover body and the rotor assembly. The distal end of the water retaining ring extends into the top cover, so that the proximal end of the top cover is lower than the distal end of the water retaining ring, and rainwater that penetrates along the proximal end of the top cover is blocked by the water retaining ring. The sealing member further ensures the sealing performance of the cover body. When rainwater from the outside flows to the connection between the cover body and the top cover, it will be blocked by the water retaining ring and the sealing member, thereby protecting the internal structure.

[0020] (2) Furthermore, a third sealing ring is embedded in the proximal end of the extension portion. The third sealing ring and the sealing element cooperate with each other to enhance the sealing performance of the cover body and the rotor assembly.

[0021] (3) Furthermore, at least three positioning bearings are arranged on the cover body. The positioning bearings can quickly position the rotor assembly and the cover body and rotatably support the rotor assembly, thereby enhancing the stability of the rotor assembly during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural schematic diagram of a yaw collector ring provided in an embodiment of the utility model is shown.

[0023] Figure 2 A cross-sectional view of a yaw collector ring provided by an embodiment of the utility model in the main view direction is shown.

[0024] Figure 3 A partial enlarged view of a yaw collector ring at position A provided by an embodiment of the utility model is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Top cover; 2. Cover body; 21. Wiring cover; 22. Bearing seat; 23. Bearing; 3. Sealing assembly; 31. Water retaining ring; 32. Sealing element; 321. First sealing ring; 322. Second sealing ring; 4. Positioning bearing; 41. Positioning seat; 5. Rotor assembly; 51. Rotor center axis; 52. Positioning plate; 521. Extension; 522. Mounting groove; 53. Third sealing ring; 54. Retaining ring; 6. Louver hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0028] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In order to more clearly describe the structure of the above-mentioned yaw collector ring, the present invention defines the terms "distal end" and "proximal end". Specifically, the "distal end" refers to the end away from the ground, and the "proximal end" refers to the end close to the ground. Figure 3 For example, Figure 3 The end of the middle seal 32 close to the top cover 1 is the distal end. Figure 3 The end of the middle seal 32 close to the retaining ring 54 is the proximal end.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3A yaw collector ring includes a rotor assembly 5, a cover body 2, a top cover 1 and a sealing assembly 3, wherein the proximal end of the rotor assembly 5 extends into the interior of the cover body 2. The top cover 1 is arranged on the rotor assembly 5 at the distal end of the cover body 2. The sealing assembly 3 includes a sealing member 32 arranged between the cover body 2 and the rotor assembly 5, and a water retaining ring 31 arranged at the distal end of the cover body 2, and the distal end of the water retaining ring 31 extends into the top cover 1. Specifically, the distal end of the water retaining ring 31 extends into the top cover 1, so that the proximal end of the top cover 1 is lower than the distal end of the water retaining ring 31, and rainwater infiltrating along the proximal end of the top cover 1 is blocked by the water retaining ring 31. The sealing member 32 further ensures the sealing performance of the cover body 2. When rainwater from the outside flows to the connection between the cover body 2 and the top cover 1, it will be blocked by the water retaining ring 31 and the sealing member 32, thereby protecting the internal structure.

[0031] The specific structure of the positioning plate 52 and the sealing member 32 is described below:

[0032] Please refer to Figure 1 , Figure 2 and Figure 3 The rotor assembly 5 includes a horizontally arranged positioning plate 52, a first sealing ring 321 is arranged between the positioning plate 52 and the cover body 2, a vertical side surface of the positioning plate 52 contacts the first sealing ring 321 wrapping the edge of the cover body 2, an extension portion 521 extends circumferentially from the positioning plate 52, and a proximal end of the extension portion 521 contacts the cover body 2. The positioning plate 52 is sleeved on the rotor central axis 51 and contacts the first sealing ring 321, ensuring the stability and sealing performance of the rotor central axis 51.

[0033] Please refer to Figure 3 The seal 32 includes a first seal ring 321 disposed between the cover body 2 and the positioning plate 52, and a second seal ring 322 disposed between the cover body 2 and the water retaining ring 31. Specifically, the material of the first seal ring 321 and the second seal ring 322 can be rubber, which has excellent waterproof performance. The first seal ring 321 is bent to fit the cover body 2, and is completely filled between the positioning plate 52, the extension portion 521 and the cover body 2. The second seal ring 322 fills the gap between the water retaining ring 31 and the cover body 2 bracket. There is relative movement between the first seal ring 321 and the positioning plate 52, which causes a certain amount of wear on the first seal ring 321, so the seal 32 is divided into the first seal ring 321 and the second seal ring 322 to reduce maintenance costs.

[0034] Please refer to Figure 3, a third sealing ring 53 is embedded in the proximal end of the extension portion 521, and the proximal end of the third sealing ring 53 abuts against the cover body 2. Specifically, an annular mounting groove 522 is provided at the proximal end of the extension portion 521, and the third sealing ring 53 is arranged in the mounting groove 522. The material of the third sealing ring 53 can be a material with certain elasticity and strength such as nylon, and nylon has good toughness and wear resistance. The third sealing ring 53 abuts against the seal 32, so that the seal 32 and the positioning plate 52 are gap-fitted. When the positioning plate 52 rotates, only the third sealing ring 53 contacts the seal 32, which reduces the friction resistance on the one hand and prolongs the service life of the seal 32 on the other hand.

[0035] Please refer to Figure 2 and Figure 3 A retaining ring 54 is also provided at the proximal end of the vertical side surface of the positioning plate 52, the outer side of the retaining ring 54 abuts against the positioning bearing 4, and the distal end of the retaining ring 54 abuts against the sealing assembly 3. Specifically, the retaining ring 54 is screwed to the positioning plate 52. The retaining ring 54 abuts against and supports the first sealing ring 321 to prevent the first sealing ring 321 from falling off, and at the same time abuts against the positioning bearing 4. When the rotor assembly 5 rotates, it rubs against the positioning bearing 4. The retaining ring 54 and the positioning plate 52 are separately provided, which is convenient for later maintenance.

[0036] The specific structure of the cover body 2 and the top cover 1 is described below:

[0037] Please refer to Figure 2 and Figure 3 At least three positioning bearings 4 are also provided on the cover body 2, and the positioning bearings 4 can rotatably abut against the rotor assembly 5. Specifically, the positioning seat 41 is screwed to the cover body 2, and the positioning bearings 4 are installed on the positioning seat 41. At least three positioning bearings 4 quickly locate the position of the rotor assembly 5 and the cover body 2, and the positioning bearings 4 rotatably support the rotor assembly 5, thereby enhancing the stability of the rotor assembly 5 when working.

[0038] Please refer to Figure 2 , the proximal end of the rotor assembly 5 is rotationally connected to the cover body 2. Specifically, a bearing 23 is provided at the proximal end of the cover body 2, and the bearing 23 is installed on the cover body 2 through a bearing seat 22, and the rotor central axis 51 is rotationally connected to the cover body 2 through the bearing 23. Both the distal end and the proximal end of the rotor central axis 51 are rotationally connected to the cover body 2 to ensure the stability of the rotation of the rotor central axis 51.

[0039] Please refer to Figure 2 , a plurality of louver holes 6 are provided on the cover body 2 and the top cover 1. Specifically, the cover body 2 and the top cover 1 exchange air with the outside along the louver holes 6 to dissipate heat. A shield (not marked in the figure) is provided on the louver holes 6 to prevent foreign objects, rainwater, etc. from entering.

[0040] Please refer to Figure 1The side of the cover body 2 is extended with a wiring cover 21. Specifically, the wiring cover 21 accommodates wires, which is convenient for the wires to connect to the stator assembly (not shown in the figure) to draw out current.

[0041] The specific working process of the utility model is as follows:

[0042] Under normal working conditions, the rotor assembly 5 rotates, and the bearing 23 rotates to connect the proximal end of the rotor central axis 51; the positioning bearing 4 abuts against the retaining ring 54, and the first sealing ring 321 supports the extension 521 through the third sealing ring 53. The positioning bearing 4 and the first sealing ring 321 cooperate with each other to support the distal end of the rotor central axis 51, ensuring the smooth rotation of the rotor assembly 5. When rainwater from the outside drops on the top cover 1 and the cover body 2, the rainwater penetrates along the gap between the top cover 1 and the cover body 2. In this process, the rainwater is first blocked by the water retaining ring 31 and the second sealing ring 322, and then blocked by the first sealing ring 321 and the third sealing ring 53. Multiple protections work together to protect the internal structure of the cover body 2 and the top cover 1.

[0043] It can be seen that the above-mentioned yaw collector ring has a water retaining ring 31 between the cover body 2 and the top cover 1, and a seal 32 between the cover body 2 and the rotor assembly 5. The distal end of the water retaining ring 31 extends into the top cover 1, so that the proximal end of the top cover 1 is lower than the distal end of the water retaining ring 31, and rainwater infiltrating along the proximal end of the top cover 1 is blocked by the water retaining ring 31. The seal 32 further ensures the sealing performance of the cover body 2. When rainwater from the outside flows to the connection between the cover body 2 and the top cover 1, it will be blocked by the water retaining ring 31 and the seal 32, thereby protecting the internal structure.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A yaw collector ring, comprising a rotor assembly, characterized in that: It also includes a cover body, a top cover and a sealing assembly, wherein: The proximal end of the rotor assembly extends into the interior of the cover body; The top cover is disposed on the rotor assembly at the distal end of the cover body; The sealing assembly comprises a sealing member arranged between the cover body and the rotor assembly, and a water retaining ring arranged at the distal end of the cover body, wherein the distal end of the water retaining ring extends into the top cover.

2. The yaw collector ring according to claim 1, characterized in that: The rotor assembly comprises a horizontally arranged positioning plate, a vertical side surface of the positioning plate contacts the cover body, an extension portion extends circumferentially from the positioning plate, and a proximal end of the extension portion contacts the cover body.

3. The yaw collector ring according to claim 2, characterized in that: The sealing member comprises a first sealing ring arranged between the cover body and the positioning plate, and a second sealing ring arranged between the cover body and the water retaining ring.

4. The yaw collector ring according to claim 2, characterized in that: A third sealing ring is embedded in the proximal end of the extension portion, and the proximal end of the third sealing ring abuts against the cover body.

5. The yaw collector ring according to claim 2, characterized in that: At least three positioning bearings are also arranged on the cover body, and the positioning bearings can rotatably abut against the rotor assembly.

6. The yaw collector ring according to claim 5, characterized in that: A retaining ring is also provided at the proximal end of the vertical side surface of the positioning plate, the outer side of the retaining ring abuts against the positioning bearing, and the distal end of the retaining ring abuts against the sealing assembly.

7. The yaw collector ring according to claim 1, characterized in that: The proximal end of the rotor assembly is rotatably connected to the cover body.

8. The yaw collector ring according to claim 1, characterized in that: A plurality of louver holes are provided on the cover body and the top cover.

9. The yaw collector ring according to claim 1, characterized in that: A wiring cover is extended from the side of the cover body.

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