Grease leakage protective cover for bearing of wind generating set
By installing protective covers with flow-guiding ramps and guide grooves on both sides of the wind turbine bearing, the problem of grease splashing and contamination was solved, and efficient collection and cleaning of grease was achieved.
Patent Information
- Application Number
- CN202422778464.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-14
AI Technical Summary
In the existing technology, the grease in the main bearing of the wind turbine generator cannot be effectively collected during rotation, resulting in grease splashing and contaminating the unit and the environment. Furthermore, the existing drainage channel design cannot completely collect waste grease.
Design a grease leakage protection cover for wind turbine generator bearings, including a front cover and a rear cover. Both are evenly arranged with drainage slopes that connect to the grease collection box. The grease splashed out is guided to the grease collection box for unified collection through the drainage slopes and guide grooves.
It effectively collects the grease thrown out by the rotating spindle, reduces the risk of grease contamination, improves the efficiency of waste grease cleaning, and reduces pollution to the unit and the environment.
Smart Images
Figure CN223511043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment maintenance, specifically a grease leakage protection cover for wind turbine generator bearings. Background Technology
[0002] With the rapid development of the wind power industry, the number of onshore and offshore wind turbines built in my country has been gradually increasing recently. To ensure sufficient lubrication and normal function, a large amount of grease is usually added between the core component of the wind turbine, the rotating shaft (hereinafter referred to as the main shaft), and the main bearing. However, because the main shaft seal is a rotary seal structure (the main shaft rotates, and the sealing ring is fixed), it is inevitable that waste grease will overflow from the end face of the sealing ring, and the overflow direction is the entire circumference. During the operation of the main shaft, it rotates, and the overflowing grease is thrown out in the circumferential direction by centrifugal force.
[0003] In existing technologies, a circular arc-shaped drainage groove is typically installed below the spindle, with an oil collection tray below it. However, this design has several drawbacks: 1. The circular arc-shaped drainage groove cannot completely surround the spindle, thus failing to collect the grease ejected from above. 2. The existing drainage groove is relatively narrow, allowing large amounts of waste grease to accumulate and overflow from the gap between the groove and the spindle components. 3. The oil collection tray has a small area and is too far from the bearings to completely collect the waste grease. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a protective cover that facilitates the collection of grease and reduces pollution.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A grease leakage protection cover for a wind turbine generator bearing includes a front cover and a rear cover respectively covering both sides of the bearing end face. The front cover and the rear cover are both annular. The front cover has a first drainage slope evenly arranged around the center on the side facing the rear cover, and the rear cover has a second drainage slope evenly arranged around the center on the side facing the front cover.
[0006] The fat collection box is located below the rear cover and has an open top surface. The first drainage slope and the second drainage slope are both connected to the fat collection box.
[0007] The beneficial effects of this utility model are: by installing front and rear covers on both sides of the wind turbine generator bearing, when the main shaft rotates, the front and rear covers block the grease thrown out in the circumferential direction and guide it to the grease collection box for unified collection, eliminating the grease splashing caused by the rotation of the main shaft in the prior art, reducing the risk of grease pollution of the unit and the environment, and improving the cleaning efficiency of waste grease.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, a first guide plate is fixedly connected to the side of the front cover facing the fat collection box, and a first guide groove is vertically opened on the side of the first guide plate facing the rear cover. One end of the first guide groove is connected to the first drainage slope, and the other end is connected to the fat collection box.
[0010] The beneficial effect of adopting the above-mentioned further solution is that the grease slides down under the action of gravity, and the first guide channel guides the grease on the first guide slope to the grease collection box.
[0011] Furthermore, a second guide plate is fixedly connected to the side of the rear cover facing the fat collection box, and a second guide groove is vertically opened on the side of the second guide plate facing the front cover. One end of the second guide groove is connected to the second drainage slope, and the other end is connected to the fat collection box.
[0012] The beneficial effect of adopting the above-mentioned further solution is that the grease slides down under the action of gravity, and the second guide channel guides the grease on the second guide slope to the grease collection box.
[0013] Furthermore, a receiving plate is provided on the top of the fat collection box, one end of which is connected to the top of the fat collection box, and the other end extends to the bottom of the first and second guide channels.
[0014] The beneficial effect of adopting the above-mentioned further solution is that the receiving plate receives the first guide channel and the second guide channel, and collects the grease in a unified manner.
[0015] Furthermore, the receiving plate is fixedly connected to the first guide plate and the second guide plate by bolts.
[0016] The beneficial effects of adopting the above-mentioned further solution are: preventing the bearing plate from loosening during spindle movement, and facilitating disassembly and replacement.
[0017] Furthermore, the receiving plate is fixedly connected to the fat collection box by bolts.
[0018] The beneficial effects of adopting the above-mentioned further solution are: preventing the grease collection box from loosening during spindle movement, and facilitating disassembly and replacement.
[0019] Furthermore, the second deflector protrudes away from the front cover.
[0020] The beneficial effect of adopting the above-mentioned further solution is that it increases the space inside the second guide plate and increases the oil collection volume.
[0021] Furthermore, the edge of the front cover is provided with a plurality of first bolt holes evenly spaced around the center.
[0022] The advantage of adopting the above-mentioned further solution is that it facilitates the fixed connection between the front cover and the bearing housing cover plate.
[0023] Furthermore, the rear cover has several second bolt holes evenly spaced around its center along its edge.
[0024] The advantage of adopting the above-mentioned further solution is that it facilitates the fixed connection between the rear cover and the bearing housing cover plate.
[0025] Furthermore, the front and rear covers are made of carbon steel.
[0026] The beneficial effects of adopting the above-mentioned further solutions are: improved structural strength and increased service life. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the front cover and rear cover of this utility model.
[0028] Figure 2 This is a schematic diagram of the installation of this utility model.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1. Front cover; 2. Rear cover; 3. First drainage slope; 4. Second drainage slope; 5. Grease collection box; 6. First guide plate; 7. First guide groove; 8. Second guide plate; 9. Second guide groove; 10. Support plate; 11. First bolt hole; 12. Second bolt hole; 13. Bearing seat. Detailed Implementation
[0031] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0032] Example 1
[0033] like Figures 1 to 2 As shown, a grease leakage protection cover for a wind turbine generator bearing includes a front cover 1 and a rear cover 2 respectively covering both sides of the bearing end face. Both the front cover 1 and the rear cover 2 are annular. The front cover 1 has a first drainage slope 3 evenly arranged around the center on the side facing the rear cover 2, and the rear cover 2 has a second drainage slope 4 evenly arranged around the center on the side facing the front cover 1.
[0034] The fat collection box 5 is located below the rear cover 2 and has an open top surface. The first drainage slope 3 and the second drainage slope 4 are both connected to the fat collection box 5.
[0035] The beneficial effects of this embodiment are: by installing a front cover 1 and a rear cover 2 on both sides of the wind turbine generator bearing, when the main shaft rotates, the front cover 1 and the rear cover 2 block the grease thrown out in the circumferential direction and guide it to the grease collection box 5 for unified collection, thereby eliminating the grease splashing caused by the rotation of the main shaft in the prior art, reducing the risk of grease contamination of the unit and the environment, and improving the cleaning efficiency of waste grease.
[0036] In this embodiment, the front cover 1 and the rear cover 2 are respectively fitted on both sides of the main shaft bearing of the wind turbine generator set, and the first diversion slope 3 and the second diversion slope 4 are conical.
[0037] When the main shaft rotates, since the main shaft seal is a rotary seal structure, the sealing ring is fixed while the main shaft rotates. It is inevitable that grease will overflow from the end face of the sealing ring. The grease splashes under the action of centrifugal force. The first drainage slope 3 and the second drainage slope 4 block the grease. Under the action of gravity, the grease slides into the grease collection box 5 for unified collection.
[0038] Example 2
[0039] like Figures 1 to 2 As shown, preferably, based on embodiment 1, a first guide plate 6 is fixedly connected to the side of the front cover 1 facing the fat collection box 5, and a first guide groove 7 is vertically opened on the side of the first guide plate 6 facing the rear cover 2. One end of the first guide groove 7 is connected to the first drainage inclined surface 3, and the other end is connected to the fat collection box 5.
[0040] Preferably, a second guide plate 8 is fixedly connected to the side of the rear cover 2 facing the fat collection box 5. The second guide plate 8 has a second guide groove 9 vertically formed on the side of the front cover 1. One end of the second guide groove 9 is connected to the second drainage inclined surface 4, and the other end is connected to the fat collection box 5.
[0041] Preferably, the top of the fat collection box 5 is provided with a receiving plate 10, one end of which is connected to the top of the fat collection box 5, and the other end extends to the bottom of the first guide groove 7 and the second guide groove 9.
[0042] Preferably, the receiving plate 10 is fixedly connected to the first guide plate 6 and the second guide plate 8 by bolts.
[0043] Preferably, the receiving plate 10 is fixedly connected to the fat collection box 5 by bolts.
[0044] In this embodiment, the splashed grease is blocked by the first guiding slope 3 and the second guiding slope 4, and then guided to the receiving plate 10 through the first guiding groove 7 and the second guiding groove 9, and then guided to the grease collection box 5 by the receiving plate 10, which makes it more convenient to collect the grease in a unified manner.
[0045] Specifically, such as Figure 2As shown, the main shaft of the wind turbine generator is mounted on two bearing seats 13, and bearings are installed in both bearing seats 13. The axis of the main shaft has an elevation angle of 5° with the horizontal direction. Therefore, the actual waste grease mainly overflows from the rear end of the bearing. Thus, the grease collection box 5 is set below the rear cover 2, and the receiving plate 10 is also tilted to facilitate the flow of waste grease.
[0046] Example 3
[0047] like Figures 1 to 2 As shown, preferably, based on embodiments 1-2, the second guide plate 8 protrudes in a direction away from the front cover 1.
[0048] In this embodiment, since the waste grease mainly overflows from the rear end of the bearing, by increasing the thickness of the second guide plate 8 protrusion and increasing the volume of the second guide groove 9 (the rear end of the bearing), it is more conducive to the containment and collection of waste grease.
[0049] Example 4
[0050] like Figures 1 to 2 As shown, preferably, based on embodiments 1-3, the front cover 1 has a plurality of first bolt holes 11 evenly formed around the center on its edge.
[0051] Preferably, the rear cover 2 has a plurality of second bolt holes 12 evenly distributed around its center along its edge.
[0052] In this embodiment, both sides of the bearing housing 13 are provided with cover plates and several screw holes. The front cover 1 and the cover plate are fixedly connected to one side of the bearing housing 13 by bolts, and the rear cover 2 and the other side cover plate are fixedly connected to the other side of the bearing housing 13.
[0053] Example 5
[0054] like Figures 1 to 2 As shown, preferably, based on embodiments 1-4, the front cover 1 and the rear cover 2 are made of carbon steel.
[0055] The advantages of adopting the preferred solution in the above embodiments are: improved structural strength and increased service life.
[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A grease leakage protection cover for wind turbine generator bearings, characterized in that, It includes a front cover (1) and a rear cover (2) respectively covering both sides of the bearing end face. Both the front cover (1) and the rear cover (2) are annular. The front cover (1) has a first drainage slope (3) evenly arranged around the center on the side facing the rear cover (2). The rear cover (2) has a second drainage slope (4) evenly arranged around the center on the side facing the front cover (1). The fat collection box (5) is located below the rear cover (2) and has an open top surface. The first drainage slope (3) and the second drainage slope (4) are both connected to the fat collection box (5).
2. The wind turbine generator bearing grease leakage protection cover according to claim 1, characterized in that, The front cover (1) is fixedly connected to a first guide plate (6) on the side facing the fat collection box (5). The first guide plate (6) is vertically provided with a first guide groove (7) on the side facing the rear cover (2). One end of the first guide groove (7) is connected to the first drainage slope (3), and the other end is connected to the fat collection box (5).
3. The wind turbine generator bearing grease leakage protection cover according to claim 2, characterized in that, The rear cover (2) is fixedly connected to a second guide plate (8) on the side facing the fat collection box (5). The second guide plate (8) is vertically provided with a second guide groove (9) on the side facing the front cover (1). One end of the second guide groove (9) is connected to the second drainage slope (4), and the other end is connected to the fat collection box (5).
4. The wind turbine generator bearing grease leakage protection cover according to claim 3, characterized in that, The top of the fat collection box (5) is provided with a receiving plate (10), one end of which is connected to the top of the fat collection box (5), and the other end extends to the bottom of the first guide groove (7) and the second guide groove (9).
5. A grease leakage protection cover for a wind turbine generator bearing according to claim 4, characterized in that, The receiving plate (10) is fixedly connected to the first guide plate (6) and the second guide plate (8) by bolts.
6. The wind turbine generator bearing grease leakage protection cover according to claim 5, characterized in that, The receiving plate (10) is fixedly connected to the fat collection box (5) by bolts.
7. The wind turbine generator bearing grease leakage protection cover according to claim 3, characterized in that, The second guide plate (8) protrudes away from the front cover (1).
8. The wind turbine generator bearing grease leakage protection cover according to claim 1, characterized in that, The front cover (1) has several first bolt holes (11) evenly distributed around its center on its edge.
9. A grease leakage protection cover for a wind turbine generator bearing according to claim 1, characterized in that, The rear cover (2) has several second bolt holes (12) evenly spaced around its center.
10. A grease leakage protection cover for a wind turbine generator bearing according to any one of claims 1 to 9, characterized in that, The front cover (1) and the rear cover (2) are made of carbon steel.