Bearing lubricating device and wind turbine generator set

Abstract

The application provides a bearing lubricating device and a wind turbine generator, and relates to the technical field of wind power generation. The bearing lubricating device comprises a bearing seat, a main shaft, an oil pumping mechanism, a main pipeline, a plurality of branch pipelines and a plurality of bearings. The main shaft is arranged in the bearing seat. Each bearing is matched with the bearing seat and the main shaft. The oil pumping mechanism is communicated with the main pipeline to pump lubricating oil to the main pipeline. The main pipeline is arranged in the bearing seat and communicated with the plurality of branch pipelines. The outlets of the plurality of branch pipelines are respectively directed to the plurality of bearings. The bearing lubricating device can reduce the operation time of bearing lubrication and improve the operation efficiency.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and more specifically, to a bearing lubrication device and a wind turbine generator set. Background Technology

[0002] Wind power generation, as a clean energy technology, has been widely applied and rapidly developed globally in recent years. Among the many components of a wind turbine generator set, bearings, as key elements supporting rotating parts, are crucial to the operation of the unit due to their lubrication condition.

[0003] Currently, bearing lubrication in wind turbine generators primarily relies on manual oiling. Maintenance personnel must climb to each bearing location, locate the corresponding oil filling hole, and use manual or electric oiling equipment to inject lubricating oil into the bearing. This lubrication method requires experienced personnel who can accurately identify the oil filling points and oil volume standards for different bearings. Each lubrication operation consumes a significant amount of time in locating the oil filling holes and moving around. This manual point-by-point oiling method is not only time-consuming but also prone to uneven lubrication or omissions due to human error, affecting the bearing's service life. Summary of the Invention

[0004] The purpose of this application includes, for example, providing a bearing lubrication device and a wind turbine generator set that can reduce the operation time of bearing lubrication and improve operation efficiency.

[0005] The embodiments of this application can be implemented as follows: An embodiment of this application provides a bearing lubrication device, which includes a bearing housing, a main shaft, an oil pumping mechanism, a main pipeline, multiple branch pipelines, and multiple bearings. The main shaft passes through the bearing housing, and each bearing simultaneously cooperates with both the bearing housing and the main shaft. The oil pumping mechanism is connected to the main pipeline to pump lubricating oil into the main pipeline. The main pipeline is disposed in the bearing housing and is simultaneously connected to the multiple branch pipelines. The outlets of the multiple branch pipelines are respectively directed toward the multiple bearings.

[0006] Optionally, the branch pipeline includes a first branch pipeline and a second branch pipeline, both of which are connected to the main pipeline. The outlets of the first branch pipeline and the second branch pipeline face the same bearing, and the outlets of the first branch pipeline and the second branch pipeline are arranged at an angle to each other along the circumference of the bearing.

[0007] Optionally, the angle between the outlets of the first branch pipe and the second branch pipe along the circumference of the bearing is 30° to 60°.

[0008] Optionally, the oil pumping mechanism includes an oil tank and an oil pump, with the input and output ends of the oil pump connected to the oil tank and the main pipeline, respectively.

[0009] Optionally, the bearing housing is provided with a reflux hole, and the reflux hole is positioned to match the oil tank.

[0010] Optionally, the bearing housing is provided with an observation hole, and the bearing housing is provided with a plug at the observation hole.

[0011] Optionally, each of the outlets of the branch pipes is equipped with a nozzle.

[0012] Optionally, the bearing housing is provided with a plurality of support seats along the length direction of the main pipeline, and the main pipeline passes through a plurality of the support seats simultaneously.

[0013] Optionally, the support includes a seat body and a limiting block. The seat body is disposed on the bearing seat, and the limiting block and the seat body are detachably connected. A through hole is formed between the limiting block and the seat body for the main pipeline to pass through.

[0014] This application also provides a wind turbine generator set, including the aforementioned bearing lubrication device.

[0015] The beneficial effects of the bearing lubrication device and wind turbine generator provided in this application include, for example, that during the bearing lubrication process, after the lubricating oil enters the main pipeline via the oil pumping mechanism, it can sequentially pass through multiple branch pipelines connected to it, and finally be sprayed out from the outlet of each branch pipeline toward the corresponding bearing, completing the automated lubrication process. This application, by constructing an oil supply path system composed of an oil pumping mechanism, a main pipeline, and multiple branch pipelines, combined with the bearing layout on the bearing housing, achieves synchronous and efficient lubrication of multiple bearings, significantly reducing the bearing lubrication operation time and improving operational efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the bearing lubrication device in an embodiment of this application; Figure 2 for Figure 1 Enlarged view of section A; Figure 3 for Figure 1 Enlarged view of section B; Figure 4 This is a schematic diagram illustrating the pipeline connection structure in an embodiment of this application.

[0018] Icons: 100-Bearing seat; 110-Observation hole; 120-Plug; 130-Support seat; 131-Seat body; 132-Limit block; 200-Main shaft; 300-Main pipeline; 400-Branch pipeline; 410-First branch pipeline; 420-Second branch pipeline; 430-Nozzle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing this application 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 application.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0025] In existing wind turbine generator sets, bearing lubrication largely relies on manual operation, which suffers from low efficiency and easy omissions. To solve this technical problem, the embodiments of this application achieve centralized oil supply to multiple bearings by setting up an integrated bearing lubrication device.

[0026] Please refer to Figures 1-4 The embodiments of this application provide a bearing lubrication device, including a bearing housing 100, a main shaft 200, an oil pumping mechanism, a main pipeline 300, multiple branch pipelines 400, and multiple bearings. The main shaft 200 passes through the bearing housing 100, and each bearing simultaneously cooperates with both the bearing housing 100 and the main shaft 200. The oil pumping mechanism is connected to the main pipeline 300 to pump lubricating oil into the main pipeline 300. The main pipeline 300 is disposed in the bearing housing 100 and is simultaneously connected to the multiple branch pipelines 400. The outlets of the multiple branch pipelines 400 are respectively directed toward the multiple bearings.

[0027] The oil pumping mechanism is connected to the main pipeline 300, which continuously delivers lubricating oil to the main pipeline 300. The main pipeline 300 is fixedly mounted on the bearing housing 100 and further connected to multiple branch pipelines 400, allowing the lubricating oil to flow along different paths. Each branch pipeline 400 outlet corresponds to a bearing, thus achieving simultaneous lubrication of multiple bearings. For example, if there are two bearings, there are also two branch pipelines 400, with each branch pipeline 400 outlet corresponding to a different bearing. The main shaft 200 passes through the bearing housing 100, and each bearing simultaneously engages with both the bearing housing 100 and the main shaft 200, ensuring the fulfillment of support and transmission functions.

[0028] During bearing lubrication, lubricating oil enters the main pipeline 300 via an oil pumping mechanism, and then sequentially passes through multiple branch pipelines 400 connected to it. Finally, it is sprayed from the outlet of each branch pipeline 400 towards the corresponding bearing, completing the automated lubrication process. In summary, this embodiment, by constructing an oil supply system consisting of an oil pumping mechanism, the main pipeline 300, and multiple branch pipelines 400, combined with the bearing layout on the bearing housing 100, achieves synchronous and efficient lubrication of multiple bearings, significantly reducing the bearing lubrication operation time and improving operational efficiency.

[0029] In this embodiment, the branch pipeline 400 includes a first branch pipeline 410 and a second branch pipeline 420. Both the first branch pipeline 410 and the second branch pipeline 420 are connected to the main pipeline 300. The outlets of the first branch pipeline 410 and the second branch pipeline 420 face the same bearing, and the outlets of the first branch pipeline 410 and the second branch pipeline 420 are arranged at an angle along the circumference of the bearing.

[0030] It should be noted that a single oil injection point is insufficient to guarantee uniform circumferential lubrication of the bearing. To improve this, this embodiment achieves multi-point oil supply by providing two branch pipes 400 facing the same bearing. Specifically, both the first branch pipe 410 and the second branch pipe 420 are connected to the main pipe 300, allowing lubricating oil from the oil pumping mechanism to simultaneously flow into these two branch pipes 400 via the main pipe 300. The outlets of the two branch pipes 400 face the same bearing and are arranged at an angle along the circumference of the bearing, thus allowing lubricating oil to enter the bearing surface from different angles.

[0031] During bearing lubrication, lubricating oil sprayed from different directions can cover a wider contact area of ​​the bearing, helping to form a more continuous oil film. This embodiment can be understood as achieving multi-point lubrication of the same bearing by arranging the outlets of the first branch pipe 410 and the second branch pipe 420 at a circumferential angle, thus improving the uniformity of lubrication distribution.

[0032] In an optional embodiment, the angle between the outlets of the first branch pipe 410 and the second branch pipe 420 along the circumferential direction of the bearing is 30° to 60°.

[0033] To improve lubrication coverage and continuity, this embodiment sets the included angle between the outlets of the first branch pipe 410 and the second branch pipe 420 along the bearing circumference to a range of 30° to 60°. Specifically, lubricating oil enters the same bearing surface from two different angles, forming staggered lubrication areas when the spindle 200 rotates, which helps to achieve uniform oil film distribution. This angle design ensures that the two oil injection points maintain sufficient separation to expand coverage while avoiding lubrication gaps due to excessive distance. For example, when the included angle is 45°, a more balanced lubrication compensation effect can be achieved circumferentially. If the outlet of the first branch pipe 410 is located at the top of the bearing housing 100, and the outlet of the second branch pipe 420 is located at a 45° position on the side of the bearing housing 100, it is more conducive to maintaining the oil film in the bearing side area.

[0034] In this embodiment, the oil pumping mechanism includes an oil tank and an oil pump, with the input and output ends of the oil pump connected to the oil tank and the main pipeline 300, respectively.

[0035] The input end of the oil pump is connected to the oil tank, and the output end is connected to the main pipeline 300. In practice, lubricating oil is drawn from the oil tank, pressurized by the oil pump, and pushed to the main pipeline 300, thereby entering each branch pipeline 400 and finally reaching the bearing lubrication position. This embodiment can be understood as using an oil tank to store lubricating oil and an oil pump to provide delivery power, forming a continuous and controllable lubrication supply path, thus achieving centralized automatic lubrication of multiple bearings.

[0036] In this embodiment, a return hole is provided on the bearing housing 100, and the position of the return hole matches that of the oil tank.

[0037] A return hole is formed on the bearing housing 100, which is matched with the position of the oil tank to form a return channel for lubricating oil. Specifically, excess lubricating oil can flow back to the oil tank through the return hole under the action of gravity or cavity pressure, realizing the recycling of oil. It can be understood that this embodiment improves the reliability of oil management by setting a return path of the lubrication system through a return hole connected to the oil tank.

[0038] In this embodiment, the bearing housing 100 is provided with an observation hole 110, and the bearing housing 100 is provided with a plug 120 at the observation hole 110.

[0039] An observation hole 110 is made on the bearing housing 100, and a plug 120 is installed at this location to form an openable observation structure. In practice, maintenance personnel can remove the plug 120 and directly observe the distribution of lubricating oil near the bearing through the observation hole 110 to determine whether lubrication is adequate.

[0040] By providing an observation hole 110 with a plug 120 in the bearing housing 100, the bearing lubrication effect can be visually inspected, ensuring both sealing and facilitating manual inspection. Therefore, the observation hole 110 structure provides a direct reference for lubrication system maintenance, helps to promptly detect abnormal oil supply problems, and improves the reliability and maintainability of equipment operation.

[0041] In this embodiment, each of the outlets of the multiple branch pipes 400 is equipped with a nozzle 430.

[0042] To optimize lubrication distribution, this embodiment provides nozzles 430 at the outlets of multiple branch pipelines 400. The nozzles 430 control the flow direction, atomization level, and spray angle of the lubricating oil. Specifically, the lubricating oil from the main pipeline 300 and branch pipelines 400, after being pressurized by the nozzles 430, can form a directional liquid flow or atomized oil droplets, delivering it more precisely to the bearing contact area. Specifically, the nozzle 430 can be selected as a fan-shaped nozzle, a solid cone nozzle, or a narrow-angle direct-injection nozzle, flexibly configured according to installation space and lubrication requirements to achieve concentrated spraying or area coverage.

[0043] In this embodiment, a plurality of support seats 130 are provided on the bearing housing 100 along the length direction of the main pipeline 300, and the main pipeline 300 is simultaneously provided with a plurality of support seats 130.

[0044] It should be noted that the length direction of the main pipeline 300 is consistent with the length direction of the main shaft 200. Multiple support seats 130 are provided on the bearing housing 100 along the length direction of the main pipeline 300, and the main pipeline 300 passes through these support seats 130, forming a multi-point support structure. In specific implementation, the support seats 130 provide radial constraint and mechanical support to the main pipeline 300, effectively dispersing the stress on the pipeline and suppressing fatigue damage caused by unit vibration. It can be understood that by configuring multiple support seats 130 along the extension path of the main pipeline 300, the overall rigidity and stability of the pipeline system are enhanced.

[0045] Furthermore, the support base 130 includes a base body 131 and a limiting block 132. The base body 131 is disposed on the bearing housing 100, and the limiting block 132 and the base body 131 are detachably connected. A through hole is formed between the limiting block 132 and the base body 131 for the main pipeline 300 to pass through.

[0046] The main pipeline 300 is detachably fixed by a support base 130 consisting of a base 131 and a limiting block 132. For example, the limiting block 132 and the base 131 can be detachably connected by bolts or clips. In specific implementation, the base 131 is fixed to the bearing seat 100, providing basic support, and the limiting block 132 is detachably connected to the base 131, together forming a through hole for the main pipeline 300 to pass through.

[0047] The main pipeline 300 can be inserted or removed from above the base 131 during installation or maintenance without axial insertion, thus improving assembly efficiency. This can be understood as the separate design of the base 131 and the limiting block 132 ensuring stable support for the pipeline while facilitating assembly and subsequent maintenance.

[0048] An embodiment of this application also provides a wind turbine generator set, including the bearing lubrication device described above.

[0049] In summary, the embodiments of this application provide a bearing lubrication device and a wind turbine generator set. The bearing lubrication device includes a bearing housing 100, a main shaft 200, an oil pumping mechanism, a main pipeline 300, multiple branch pipelines 400, and multiple bearings. By constructing an oil supply path system composed of an oil pumping mechanism, a main pipeline 300, and multiple branch pipelines 400, combined with the layout of the bearings on the bearing housing 100, synchronous and efficient lubrication of multiple bearings is achieved, significantly reducing the operation time of bearing lubrication and improving operation efficiency.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A bearing lubrication device, characterized in that, The device includes a bearing housing, a main shaft, an oil pumping mechanism, a main pipeline, multiple branch pipelines, and multiple bearings. The main shaft passes through the bearing housing, and each bearing simultaneously engages with both the bearing housing and the main shaft. The oil pumping mechanism is connected to the main pipeline to pump lubricating oil into the main pipeline. The main pipeline is located in the bearing housing and is simultaneously connected to the multiple branch pipelines. The outlets of the multiple branch pipelines are respectively directed towards the multiple bearings.

2. The bearing lubrication device according to claim 1, characterized in that, The branch pipeline includes a first branch pipeline and a second branch pipeline. Both the first branch pipeline and the second branch pipeline are connected to the main pipeline. The outlets of the first branch pipeline and the second branch pipeline face the same bearing, and the outlets of the first branch pipeline and the second branch pipeline are arranged at an angle along the circumference of the bearing.

3. The bearing lubrication device according to claim 2, characterized in that, The angle between the outlets of the first branch pipe and the second branch pipe along the circumference of the bearing is 30° to 60°.

4. The bearing lubrication device according to claim 1, characterized in that, The oil pumping mechanism includes an oil tank and an oil pump, with the input and output ends of the oil pump connected to the oil tank and the main pipeline, respectively.

5. The bearing lubrication device according to claim 4, characterized in that, The bearing housing is provided with a return hole, and the return hole is matched with the position of the oil tank.

6. The bearing lubrication device according to claim 1, characterized in that, The bearing housing has an observation hole, and a plug is provided at the observation hole.

7. The bearing lubrication device according to claim 1, characterized in that, Each of the outlets of the branch pipes is equipped with a nozzle.

8. The bearing lubrication device according to claim 1, characterized in that, The bearing housing is provided with multiple support seats along the length of the main pipeline, and the main pipeline passes through multiple support seats simultaneously.

9. The bearing lubrication device according to claim 8, characterized in that, The support includes a base and a limiting block. The base is disposed on the bearing seat, and the limiting block and the base are detachably connected. A through hole is formed between the limiting block and the base for the main pipeline to pass through.

10. A wind turbine generator set, characterized in that, Includes the bearing lubrication device according to any one of claims 1-9.

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