Wind turbine generator yaw bearing lubricating grease collecting device
By improving the structure of the oil guide and utilizing designs such as covers and grooves, the problem of grease leakage in the yaw bearing lubricating grease collection device of wind turbine units was solved, achieving high-precision collection and convenient processing.
Patent Information
- Application Number
- CN202520338013.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing grease collection devices for yaw bearings in wind turbines suffer from problems such as easy grease leakage, contamination, and low collection accuracy due to the simple structure of the oil guide pipe.
The structure features a cover, groove, restraint block, and guide tube. The cover is fixed to the bottom of the yaw bearing, and the guide tube is introduced with rounded corners. Combined with the filter plate and collector, it can accurately collect and filter excess grease.
It improves the accuracy of grease collection, prevents contamination, enhances the practicality and convenience of the collection device, and ensures that grease can accurately enter the collection container and facilitate subsequent processing.
Smart Images
Figure CN223649079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubricating grease collection technology, specifically a lubricating grease collection device for the yaw bearing of a wind turbine. Background Technology
[0002] The yaw bearing of a wind turbine is a key component of a wind turbine. It is mainly used to maintain the relative position between the wind turbine's rotating system and the tower, ensuring that the entire wind turbine can rotate in the direction of the wind, thereby improving wind energy utilization efficiency.
[0003] Therefore, a certain amount of lubricating oil is required for the yaw bearing of the wind turbine during use to improve the lubrication of the mechanical rotating surface and prevent excessive dryness, which would reduce the service life of the bearing. However, the lubricating oil will produce grease when the temperature changes and the pressure increases during use. The grease produced must be collected by a special collection device to prevent the grease from dripping directly after it is produced, and to ensure that the grease can be collected in a suitable area for special treatment.
[0004] However, existing grease collection devices have the following drawbacks: Current devices guide excess grease into the collection container via an oil guide pipe. However, the structure of this pipe is relatively simple, consisting of a single tube connected to the yaw bearing. This single-tube connection easily leads to gaps in the side areas, causing some grease to leak out and contaminate the outside of the pipe. Furthermore, it reduces the accuracy of the collection container in collecting excess grease, thus diminishing the practicality of the current collection device. Utility Model Content
[0005] To address the above problems, this utility model provides a lubricating grease collection device for the yaw bearing of a wind turbine.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a grease collection device for a yaw bearing of a wind turbine, the structure of which includes: a connecting and fixing block, a cover box, a collector, a filter plate, and an oil guide. The connecting and fixing block is welded to the center of the side of the cover box, and the collector is connected to the lower end of the cover box. The collector is connected to the center of the filter plate through the cover box and is parallel to each other. The filter plate is embedded in the center of the cover box and the surface is connected to the oil guide and connected to the lower end of the yaw bearing.
[0007] Furthermore, the oil guide is also equipped with an insert block, which is fixed to the lower left and right sides of the vertical body and a guide tube is connected to the upper center of the vertical body. The top of the guide tube is connected to the lower area of the cover, and a groove is opened in the cover to fix the restraining block left and right through the groove.
[0008] Furthermore, the oil guide is connected to the outer side of the bottom of the yaw bearing by the cover, groove and restraint block. Then, the three guide tubes at the bottom of the cover can be arranged in parallel according to the left, center and right positions, so that the excess grease that seeps out of the yaw bearing will enter the inside of the cover. The cover, according to the rounded corner shape of the inner wall, allows the grease to flow into the guide tubes. Finally, it enters the filter plate through the vertical body for filtration and enters the cover box.
[0009] Furthermore, the connecting fixing block is a solid protrusion, and the lower end of the cover box is covered by the collector, and the filter plate is installed parallel to the center of the inside of the cover box to cover the top of the collector, and the oil guide is set in a vertical position.
[0010] Furthermore, the insert has two blocks at the lower end of the vertical body and is set in a symmetrical position. The vertical body and the guide tube are set in three groups in the left, middle and right positions of the cover. The corners of the groove are rounded and two restraining blocks are connected in the middle to the edge of the yaw bearing housing.
[0011] Furthermore, the vertical body is also provided with a connecting groove, which is opened at the center of the solid block and allows the guide tube to be embedded. Inside the solid block, there are also support columns on the left and right sides to position the branch tube. The upper end of the branch tube covers the lower end of the connecting groove, and the lower end of the branch tube is connected to the center of the permeation layer. The permeation layer is set at the lower center of the solid block, and there are also partition blocks on the left and right sides of the permeation layer to fix the connecting block. The insert is vertically embedded through the connecting block.
[0012] Furthermore, the dimensions of the connecting groove and the guide tube are matched, the left and right support pillars inside the solid block are set in a symmetrical orientation and the branch pipe is installed at the lower center of the connecting groove, and the connecting groove of the connecting block and the insert block are matched.
[0013] Furthermore, the collector is also equipped with a control pull block, the upper end of which is welded to the lower center of the parallel plate, and an adsorption plate is fixed on the surface of the parallel plate. The adsorption plate vertically positions the receiving box, and the inside of the receiving box has a cavity that communicates with the lower layer of the filter plate.
[0014] Furthermore, the control pull block is perpendicular to the parallel plate, and the parallel plate vertically embeds the receiving box into the internal area of the covering box through the adsorption plate, and then the adsorption plate adsorbs onto the lower edge of the covering box. Beneficial effects
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. This utility model, through further improvements to the oil guide, uses the groove of the cover and the restraining block to fix and cover the lower outer area of the yaw bearing, allowing excess grease that has seeped into the yaw bearing to enter the groove. Then, the rounded corners of the inner wall of the groove lead into the guide tube. By covering the area below the yaw bearing, it avoids the problem of the guide tube not being able to completely receive excess grease due to excessive gaps, thus improving the accuracy of receiving excess grease and preventing leakage that could contaminate the exterior of other components. Therefore, it improves the accuracy and practicality of the grease collection device.
[0017] 2. With further improvements to the collector, this utility model allows for manual control via a control block at the lower end of the parallel plate. This enables the parallel plate to vertically embed the receiving box into the cover box via the adsorption plate, ensuring precise connection between the receiving box and the filter plate. Consequently, it further improves the accuracy of grease collection and facilitates the easy removal of the receiving box from the cover box for subsequent grease treatment, thus enhancing the overall ease of use of the collection device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a yaw bearing lubricating grease collection device for a wind turbine generator according to the present invention.
[0019] Figure 2 This is a cross-sectional structural schematic diagram of an improved oil guide device according to this utility model.
[0020] Figure 3 This is a front view schematic diagram of the improved vertical body structure of this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of a collector according to the present invention.
[0022] In the diagram: Connecting fixing block-1, Cover box-2, Collector-3, Filter plate-4, Oil guide-5;
[0023] Insert block-51, vertical body-52, guide tube-53, cover-54, groove-55, restraint block-56;
[0024] Connecting groove-521, solid block-522, support column-523, branch pipe-524, permeable layer-525, partition block-526, connecting block-527;
[0025] Control block-31, parallel plate-32, adsorption plate-33, receiving box-34, cavity-35. Detailed Implementation
[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example
[0028] like Figures 1-4 As shown, this utility model provides a lubricating grease collection device for the yaw bearing of a wind turbine.
[0029] Its structure includes a connecting and fixing block 1, a cover box 2, a collector 3, a filter plate 4, and an oil guide 5. The connecting and fixing block 1 is welded to the center of the side of the cover box 2, and the collector 3 is connected to the lower end of the cover box 2. The collector 3 is connected to the center of the filter plate 4 through the cover box 2. The filter plate 4 is embedded parallel to the center of the inside of the cover box 2, and the surface is connected to the oil guide 5, which is connected to the lower end of the yaw bearing.
[0030] The oil guide 5 is also provided with an insert 51, which is fixed to the lower left and right sides of the surface of the vertical body 52. The upper center of the vertical body 52 is connected to a guide tube 53, the top of which is connected to the lower area of the cover 54. The cover 54 has a groove 55, which is used to fix the restraining block 56 left and right.
[0031] The oil guide 5 is connected to the outer side of the bottom of the yaw bearing by the cover 54, groove 55, and restraint block 56. Then, the three guide tubes 53 at the bottom of the cover 54 can be arranged in parallel according to the left, center and right positions, so that the excess grease that seeps out of the yaw bearing will enter the interior of the cover 54. The cover 54 allows the grease to flow into the guide tubes 53 according to the rounded corner shape of the inner wall. Finally, it enters the filter plate 4 through the vertical body 52 for filtration and enters the interior of the cover box 2.
[0032] The connecting fixing block 1 is a solid protrusion, and the lower end of the cover box 2 is covered by the collector 3. The filter plate 4 is installed parallel to the center of the inside of the cover box 2, covering the collector 3. The oil guide 5 is set in a vertical position.
[0033] Among them, there are two insert blocks 51 at the lower end of the vertical body 52 and they are set in a symmetrical position. The vertical body 52 and the guide tube 53 are set in three groups in the left, middle and right positions of the cover 54. The corners of the groove 55 are rounded and two restraining blocks 56 are connected in the middle to the edge of the yaw bearing housing.
[0034] The vertical body 52 is also provided with a connecting groove 521. The connecting groove 521 is opened at the center of the solid block 522 and allows the guide tube 53 to be embedded. Inside the solid block 522, there are also support columns 523 on the left and right sides to position the branch tube 524. The upper end of the branch tube 524 covers the lower end of the connecting groove 521. The lower end of the branch tube 524 is connected to the center of the permeation layer 525. The permeation layer 525 is set at the lower center of the solid block 522. On the left and right sides of the permeation layer 525, there are also partition blocks 526 to fix the connecting block 527. The insert 51 is vertically embedded through the connecting block 527.
[0035] The dimensions of the connecting groove 521 and the guide tube 53 are matched. The left and right support columns 523 inside the solid block 522 are set in a symmetrical position and the branch tube 524 is installed at the lower center of the connecting groove 521. The connecting groove of the connecting block 527 is matched with the insert block 51.
[0036] The collector 3 is also provided with a control pull block 31. The upper end of the control pull block 31 is welded to the lower center of the parallel plate 32, and an adsorption plate 33 is fixed on the surface of the parallel plate 32. The receiving box 34 is vertically positioned by the adsorption plate 33. The receiving box 34 has an open cavity 35 that communicates with the lower layer of the filter plate 4.
[0037] The control pull block 31 is perpendicular to the parallel plate 32, and the parallel plate 32 vertically embeds the receiving box 34 into the inner area of the covering box 2 through the adsorption plate 33. Then the adsorption plate 33 is adsorbed onto the lower edge of the covering box 2.
[0038] The working principle of this utility model is explained below: The cover box 2 of the yaw bearing lubricating grease collection device for wind turbine generators can be installed in the connection area of the wind turbine generator through the connecting fixing block 1, so that the position of the cover box 2 and the collector 3 can be aligned with the lower area of the yaw bearing. Then, the excess grease produced by the yaw bearing will drip downwards, which is then collected by the oil guide 5. After impurities are removed in the filter plate 4, the grease can enter the collector 3 of the cover box 2 to complete the grease collection operation. Furthermore, the three sets of vertical bodies 52 of the oil guide 5 can be spliced with the filter plate 4 through the bottom insert 51. This allows the three guide tubes 53 to be perpendicular to the lower end of the cover 54. The cover 54 can then be fixed to the lower external connection area of the yaw bearing via the groove 55 and the restraining block 56. Therefore, the rounded corners of the groove 55 inside the cover 54 allow the grease dripping from the yaw bearing to flow in an arc shape, then completely enter the guide tubes 53, preventing leakage due to spacing factors and improving the accuracy of receiving excess grease from the yaw bearing. Simultaneously, the solid block 522 of the vertical body 52 can be vertically connected to the guide tubes 53 via the connecting groove 521, thus... The support column 523, based on an "L" shape, positions the branch pipe 524 at the lower center of the connecting groove 521, creating an overlapping effect. This allows the guide pipe 53 to guide the grease through the branch pipe 524 into the permeation layer 525. Finally, the permeation layer 525 enters the filter plate 4 area to remove impurities. Furthermore, the partition blocks 526 on both sides of the permeation layer 525 position the connecting block 527, preventing grease permeation area shifting due to communication between the connecting block 527 and the permeation layer 525. Then, the connecting block 527 can be spliced with the insert block 51 to ensure... The solid block 522 is set vertically, which improves the verticality of the guide tube 53. Then, the collector 3 at the lower end of the cover box 2 can be manually controlled by the control pull block 31 to control the parallel plate 32, so that the adsorption plate 33 on the parallel plate 32 can be adsorbed on the lower end of the cover box 2. At the same time, the receiving box 34 is vertically embedded in the cover box 2 and aligned with the center of the filter plate 4. Therefore, the accuracy of guiding the grease to the cavity 35 area can be improved. The vertical adsorption and detachable state can facilitate the separate pulling out of the grease inside the receiving box 34 for processing, which improves the convenience of subsequent grease processing.
[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0040] Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A grease collection device for a yaw bearing of a wind turbine, comprising: The system comprises a connecting fixing block (1), a cover box (2), a collector (3), a filter plate (4), and an oil guide (5). The connecting fixing block (1) is welded to the center of the side of the cover box (2), and the collector (3) is connected to the lower end of the cover box (2). The collector (3) is connected to the center of the filter plate (4) through the cover box (2). The filter plate (4) is embedded parallel to the center of the inside of the cover box (2), and the surface is connected to the oil guide (5), which is connected to the lower end of the yaw bearing. The system is characterized by: The oil guide (5) is also provided with a plug (51), which is fixed to the lower left and right sides of the vertical body (52) and the upper center of the vertical body (52) is connected to a guide tube (53). The top of the guide tube (53) is connected to the lower area of the cover (54). The cover (54) has a groove (55) in it, and the restraining block (56) is fixed left and right through the groove (55). The cover (54) and groove (55) and restraint block (56) of the oil guide (5) are used to complete the connection with the outer side of the bottom of the yaw bearing. Then, the three guide tubes (53) at the bottom of the cover (54) can be arranged in parallel according to the left, middle and right directions, so that the excess grease that seeps out of the yaw bearing will enter the interior of the cover (54). The cover (54) allows the grease to flow into the guide tubes (53) according to the rounded corner shape of the inner wall. Finally, it enters the filter plate (4) through the vertical body (52) for filtration and enters the interior of the cover box (2).
2. The yaw bearing lubricating grease collection device for a wind turbine as described in claim 1, characterized in that: The connecting fixing block (1) is solid and protruding, and the lower end of the cover box (2) is covered by the collector (3). The filter plate (4) is installed parallel to the center of the inside of the cover box (2) to cover the collector (3). The oil guide (5) is set in a vertical position.
3. The yaw bearing lubricating grease collection device for a wind turbine as described in claim 1, characterized in that: The insert (51) has two pieces at the lower end of the vertical body (52) and is set in a symmetrical position. The vertical body (52) and the guide tube (53) have three sets set in the left, middle and right positions of the cover (54). The corners of the groove (55) are rounded and two restraining blocks (56) are connected in the middle to the edge of the yaw bearing housing.
4. The yaw bearing lubricating grease collection device for a wind turbine as described in claim 1, characterized in that: The vertical body (52) is also provided with a connecting groove (521). The connecting groove (521) is opened at the center of the solid block (522) and allows the guide tube (53) to be embedded. The solid block (522) is also provided with support columns (523) on the left and right sides to position the branch pipe (524). The upper end of the branch pipe (524) covers the lower end of the connecting groove (521). The lower end of the branch pipe (524) will be connected to the center of the permeation layer (525). The permeation layer (525) is set at the lower center of the solid block (522), and the permeation layer (525) is also provided with partition blocks (526) on the left and right sides to fix the connecting block (527). The insert (51) is vertically embedded through the connecting block (527). The dimensions of the connecting groove (521) and the guide tube (53) are matched. The left and right support columns (523) inside the solid block (522) are set in a symmetrical position and the branch tube (524) is installed at the lower center of the connecting groove (521). The connecting groove of the connecting block (527) is matched with the insert block (51).
5. A grease collection device for a wind turbine yaw bearing according to claim 1, characterized in that: The collector (3) is also provided with a control pull block (31). The upper end of the control pull block (31) is welded to the lower center of the parallel plate (32), and an adsorption plate (33) is fixed on the surface of the parallel plate (32). The receiving box (34) is vertically positioned by the adsorption plate (33). The receiving box (34) has an open cavity (35) that communicates with the lower layer of the filter plate (4). The control pull block (31) is perpendicular to the parallel plate (32), and the parallel plate (32) vertically embeds the receiving box (34) into the inner area of the covering box (2) through the adsorption plate (33), and then the adsorption plate (33) adsorbs onto the lower edge of the covering box (2).