Lubricating device of wind generating set

Abstract

The utility model relates to the field of wind power generation, and discloses a lubricating device of a wind generating set, which comprises an oil path distributor, a lubricating gear and a gear fixing frame, and the oil path distributor comprises an oil inlet and an oil outlet communicated with the oil inlet. The oil inlet is communicated with an automatic lubricating grease adding pump of the wind generating set through a pipeline; the lubricating gear comprises an oil inlet hole and an oil outlet hole communicated with the oil inlet hole; the oil inlet hole is communicated with the oil outlet through a pipeline, and the lubricating gear can be meshed with the yaw large teeth; the gear fixing frame is provided with an avoiding space capable of containing the lubricating gear, and the lubricating gear is detachably connected with the gear fixing frame. And one side of the gear fixing frame is connected with a yaw system of the wind generating set. According to the lubricating device of the wind generating set, the problem that due to the long lubricating interval time, the tooth surfaces of the large yawing teeth are rusted and even gear teeth are broken is solved.

Description

Technical Field

[0001] The utility model relates to the field of wind power generation, in particular to a lubricating device for a wind power generator set. Background Art

[0002] A wind turbine is a device that uses blades to capture wind energy and convert it into electrical energy. It is mainly composed of a tower, a nacelle and a wind rotor system.

[0003] Wind turbines rely on yaw systems and pitch systems to capture wind energy. The yaw system aligns the wind rotor with the wind direction, and the pitch system captures wind energy by adjusting the angle of the blades. The yaw system is located inside the nacelle. In the yaw system, there are two types of gears: internal and external. One of the yaw teeth in the yaw system is exposed to the outside world. Its lubrication method mainly relies on manual lubrication. The lubrication interval of the yaw tooth is determined by the regular maintenance of the wind turbine, which is mostly about half a year. During this period, the operation of the wind turbine is prone to cause rust on the tooth surface of the yaw tooth exposed to the outside world or even tooth fracture, affecting the normal operation of the wind turbine. Utility Model Content

[0004] The main purpose of the utility model is to provide a lubrication device for a wind turbine generator set, aiming to solve the problem of rust on the tooth surface of the yaw gear and even tooth breakage caused by long lubrication intervals.

[0005] In order to achieve the above object, the utility model provides a lubricating device for a wind turbine generator set, the lubricating device for the wind turbine generator set comprising:

[0006] An oil circuit distributor, the oil circuit distributor comprising an oil inlet and an oil outlet connected to the oil inlet, the oil inlet being connected to an automatic lubrication and grease pump of the wind turbine generator set through a pipeline;

[0007] A lubricating gear, the lubricating gear comprising an oil inlet and an oil outlet connected to the oil inlet; the oil inlet is connected to the oil outlet through a pipeline, and the lubricating gear can mesh with the yaw gear; and

[0008] A gear fixing frame, wherein the gear fixing frame has a clearance space capable of accommodating the lubricating gear, and the lubricating gear is detachably connected to the gear fixing frame; one side of the gear fixing frame is connected to the yaw system of the wind turbine generator set;

[0009] The lubrication device of the wind turbine generator set has a lubrication state. In the lubrication state, the lubrication gear rotates with the yaw system, and the lubrication grease of the automatic lubrication and grease pump flows evenly onto the tooth surface of the yaw large tooth through the oil outlet hole of the lubrication gear.

[0010] In one embodiment of the utility model, the lubrication gear includes a first gear and a second gear, and any two adjacent first gears are sandwiched with a second gear. The oil inlet hole is arranged on one side of the first gear and is arranged close to the tooth top of the second gear.

[0011] In an embodiment of the present invention, both the first gear and the second gear are plastic gears.

[0012] In an embodiment of the present invention, a meshing reinforcement layer is provided on the surface of the second gear.

[0013] In an embodiment of the present invention, the tooth width of the first gear is greater than the tooth width of the second gear.

[0014] In one embodiment of the present invention, the first gear and the second gear are identically arranged, and the pitch circle diameters of the first gear and the second gear are set to d, and d is 160 mm;

[0015] The tooth root height of the first gear and the second gear is set to 23.5 mm; and

[0016] The tooth addendum height of the first gear and the second gear is set to 21 mm.

[0017] In one embodiment of the utility model, the gear fixing frame includes a first fixing frame and a second fixing frame, the first fixing frame is screwed to the second fixing frame, and the second fixing frame has the avoidance space; the first fixing frame can be screwed to the yaw system, and the second fixing frame is screwed to the lubrication gear.

[0018] In one embodiment of the present utility model, the first fixing frame includes a first fixing section and a second fixing section, the first fixing section and the second fixing section enclose a clearance space, and the second fixing frame is located in the clearance space; the first fixing section is connected to the yaw system, and the second fixing section is detachably connected to the second fixing frame.

[0019] In an embodiment of the present invention, a plurality of reinforcing ribs are provided at the connection between the first fixing section and the second fixing section.

[0020] In an embodiment of the present invention, the second fixing section is connected to the second fixing frame by using an external hexagonal bolt rod, and a part of the structure of the external hexagonal bolt rod passes through the second fixing frame.

[0021] In the technical solution of the utility model, the lubrication gear is fixed to the yaw system by a gear fixing frame and rotates with the yaw system. The gear teeth of the lubrication gear can mesh with the fixed yaw gear. The lubrication gear is provided with multiple oil outlets. The automatic lubrication and grease pump of the wind turbine generator set draws the lubricating grease to the oil circuit distributor through the pipeline. The oil circuit distributor distributes the lubricating grease to the lubrication gear. The lubricating grease finally flows through the oil outlet holes of the lubrication gear to the tooth surface of the yaw gear that needs to be lubricated, and as the lubrication gear rotates, it can be evenly applied to each tooth surface area of ​​the yaw gear. Furthermore, the lubricating grease of the lubrication gear is controlled by the oil circuit distributor and the automatic lubrication and grease pump, and no manual application is required, thereby solving the problem of rust and breakage of the yaw gear surface caused by too long lubrication interval. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a lubrication device for a wind turbine generator set provided by the utility model;

[0024] Figure 2 A front view of an embodiment of a lubrication device for a wind turbine generator set provided by the utility model;

[0025] Figure 3 The present invention is a side view of an embodiment of a lubrication device for a wind turbine generator set provided by the present invention.

[0026] Description of Figure Numbers:

[0027] Label name Label name 10 Lubrication of gears 21 First fixed frame 10a Oil inlet hole 211 First fixed section 10b Oil outlet 212 The second fixed section 20 Gear fixing bracket 21A Make room 20A Avoid space 22 Second fixing bracket 11 First Gear 12 Second gear

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] To achieve the above purpose, the utility model provides a lubrication device for a wind turbine generator set, such as Figures 1 to 3 As shown, the lubrication device of the wind turbine generator set includes:

[0033] An oil distributor, the oil distributor comprises an oil inlet and an oil outlet connected to the oil inlet, the oil inlet is connected to an automatic lubrication and grease pump of the turbine generator set through a pipeline;

[0034] The lubricating gear 10 includes an oil inlet 10a and an oil outlet 10b connected to the oil inlet 10a; the oil inlet 10a is connected to the oil outlet through a pipeline, and the lubricating gear 10 can mesh with the yaw gear; and

[0035] The gear fixing frame 20 has a clearance space 20A capable of accommodating the lubricating gear 10, and the lubricating gear 10 is detachably connected to the gear fixing frame 20; one side of the gear fixing frame 20 is connected to the yaw system of the wind turbine generator set;

[0036] The lubrication device of the wind turbine generator set has a lubrication state. In the lubrication state, the lubrication gear 10 rotates with the yaw system, and the lubrication grease of the automatic lubrication grease pump flows evenly onto the tooth surface of the yaw large tooth through the oil outlet 10b of the lubrication gear 10.

[0037] First of all, it needs to be explained that the wind turbine generator set has an automatic lubrication system, which includes an automatic lubrication and grease pump arranged in the cabin. The automatic lubrication and grease pump transports lubricating grease to the yaw bearing and the blade main shaft through a pipeline to achieve lubrication. However, what the present technical solution is to solve is a yaw tooth of the yaw system, and its lubrication is achieved through manual lubrication. Therefore, it cannot be lubricated together with the yaw bearing and the blade main shaft.

[0038] In this embodiment, the lubrication gear 10 is fixed to the yaw system through the gear fixing frame 20 and rotates with the yaw system. The gear teeth of the lubrication gear 10 can mesh with the fixed yaw gear teeth. The lubrication gear 10 is provided with a plurality of oil outlet holes 10b. The automatic lubrication and grease pump of the wind turbine generator set draws the lubricating grease to the oil circuit distributor through the pipeline. The oil circuit distributor distributes the lubricating grease to the lubrication gear 10. The lubricating grease eventually flows through the oil outlet holes 10b of the lubrication gear 10 onto the tooth surface of the yaw gear teeth that need to be lubricated, and as the lubrication gear 10 rotates, it can be evenly applied to each tooth surface area of ​​the yaw gear teeth. Furthermore, the lubricating grease of the lubrication gear 10 is controlled by the oil circuit distributor and the automatic lubrication and grease pump, and no manual application is required, thereby solving the problem of rust and breakage of the yaw gear teeth due to excessive lubrication intervals.

[0039] The oil circuit distributor is a distribution device with multiple channels, which has an oil inlet and multiple oil outlets connected to the oil inlet. The oil circuit distributor is connected to the automatic lubrication and grease pump through a pipeline to realize the flow of lubricating grease. The lubricating grease flows to different oil outlets in the internal channels through the oil inlet of the oil circuit distributor, and then flows to the parts that need to be lubricated through the pipeline.

[0040] The lubricating gear 10 includes structures such as tooth roots and tooth tops. In order to lubricate the yaw gear, an oil outlet of the oil distributor is connected to an oil inlet hole 10a of the lubricating gear 10 through a pipeline. At the same time, the interior of the lubricating gear 10 has an oil channel that allows the lubricating gear 10 to flow. One end of the oil channel is the oil inlet hole 10a, and the other end is the oil outlet hole 10b. As the lubricating gear 10 rotates with the yaw system and the yaw gear is fixed, the lubricating grease can be evenly brought to each tooth surface area of ​​the yaw gear for lubrication, thereby solving the problems of long lubrication time intervals and uneven lubrication caused by manual lubrication, preventing the yaw gear from being corroded and rusted, and avoiding gear breakage, which further affects the operation of the wind turbine.

[0041] The gear fixing frame 20 is made of a relatively hard steel material. In order to realize that the lubricating gear 10 is fixed to the yaw system of the nacelle and rotates with the yaw system, the gear fixing frame 20 encloses a space 20A that can accommodate the lubricating gear 10. The lubricating gear 10 can be detachably connected to the gear fixing frame 20, and can be connected by a locking member such as a bolt or a snap-on structure, which is not limited here. The outer side of the gear fixing frame 20 is connected to the yaw system of the wind turbine generator set.

[0042] In one embodiment of the present invention, Figure 1 As shown, the lubrication gear 10 includes a first gear 11 and a second gear 12 , and a second gear 12 is sandwiched between any two adjacent first gears 11 . The oil inlet 10 a is disposed on one side of the first gear 11 and close to the tooth top of the second gear 12 .

[0043] In this embodiment, the lubricating gear 10 includes a plurality of first gears 11 and a plurality of second gears 12. A second gear 12 is sandwiched between any two adjacent first gears 11. The first gears 11 and the second gears 12 are an integrally formed structure, and the two are stacked to form the lubricating gear 10. An oil passage is provided along the axis direction of the first gears 11 on both sides. The oil passage forms an oil inlet 10a on one side of a first gear 11, and the oil inlet 10a is connected to the oil outlet 10b. In order to prevent the lubricating gear 10 from covering the oil outlet 10b when it is meshed with the yaw gear, the oil outlet 10b is provided on the gear teeth of each second gear 12 near its tooth top. By spacing out the plurality of second gears 12, a lubricating gear 10 forms multiple lubrication areas on a yaw gear to improve the uniformity of lubrication. It can be understood that Figure 1 The number of the first gear 11 and the second gear 12 shown is not limited. Based on the inventive concept proposed by the applicant, those skilled in the art can adaptively adjust the number of the first gear 11 and the second gear 12 according to actual needs. This means that in another example, there may be a second gear 12 located on the outermost side that is not located between any two first gears 11.

[0044] In an embodiment of the present invention, the first gear 11 and the second gear 12 are both plastic gears.

[0045] In this embodiment, the first gear 11 and the second gear 12 are plastic gears. Plastic gears facilitate the processing and forming of channels and holes, reducing the difficulty of the process, and can reduce production costs.

[0046] In one embodiment of the present invention, a meshing reinforcement layer is disposed on the surface of the second gear 12 .

[0047] In this embodiment, the surface of the second gear 12 is provided with a meshing reinforcement layer, which can be a metal sheet whose shape matches the second gear 12 and is fixed to the surface of the second gear 12 by screws to form a meshing reinforcement layer, or a metal coating, which is not limited here. The meshing reinforcement layer can enhance the strength of meshing with the yaw gear, and prevent the deformation of the plastic lubrication gear 10 and meshing failure under the long-term operation of the wind turbine generator set, and fail to lubricate the yaw gear uniformly.

[0048] In an embodiment of the present invention, the tooth width of the first gear 11 is greater than the tooth width of the second gear 12 .

[0049] In this embodiment, the tooth width of the first gear 11 is greater than that of the second gear 12, so that the spacing of the oil outlet holes 10b along the axial direction of the gear is evenly connected to the tooth surface of the yaw large tooth to improve the uniformity of lubrication.

[0050] In one embodiment of the present utility model, the first gear 11 and the second gear 12 are identically arranged, and the pitch circle diameter of the first gear 11 and the second gear 12 is set to d, and d is 160 mm;

[0051] The tooth root height of the first gear 11 and the second gear 12 is set to 23.5 mm; and

[0052] The tooth addendum height of the first gear 11 and the second gear 12 is set to 21 mm.

[0053] In this embodiment, the first gear 11 and the second gear 12 are set equally to ensure that both can mesh with the yaw gear. Further, in order to improve the degree of meshing with the yaw gear, the applicant conducted on-site physical measurements of the yaw gear and obtained relevant data of the yaw gear, thereby further limiting the size of the first gear 11 and the second gear 12, wherein the pitch circle diameter of the first gear 11 and the second gear 12 is set to d, d is 160mm; the tooth root height of the first gear 11 and the second gear 12 is set to 23.5mm; the tooth top height of the first gear 11 and the second gear 12 is set to 21mm, to ensure that the lubrication gear 10 can fully mesh with the yaw gear when it rotates with the yaw system.

[0054] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the gear fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22 . The first fixing frame 21 is screwed to the second fixing frame 22 . The second fixing frame 22 has an avoidance space 20A. The first fixing frame 21 can be screwed to the yaw system, and the second fixing frame 22 is screwed to the lubrication gear 10 .

[0055] In this embodiment, the gear fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22. The materials of the first fixing frame 21 and the second fixing frame 22 are both steel. The first fixing frame 21 is screwed to the second fixing frame 22 to replace related parts for maintenance. Furthermore, the second fixing frame 22 forms an escape space 20A that can accommodate the lubrication gear 10. The two sides of the second fixing frame 22 are connected to the lubrication gear 10. At the same time, the second fixing frame 22 has a limiting hole connected to the oil inlet hole 10a of the lubrication gear 10 on one side where the lubrication gear 10 is connected, so that the pipeline can be connected to the lubrication gear 10.

[0056] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the first fixing frame 21 includes a first fixing section 211 and a second fixing section 212. The first fixing section 211 and the second fixing section 212 enclose a clearance space 21A, and the second fixing frame 22 is located in the clearance space 21A; the first fixing section 211 is connected to the yaw system, and the second fixing section 212 is detachably connected to the second fixing frame 22.

[0057] In this embodiment, the first fixing frame 21 includes a first fixing section 211 and a second fixing section 212. The first fixing section 211 and the second fixing section 212 are bent and connected to form a clearance space 21A that can accommodate the second fixing frame 22. Furthermore, the two are an integrally formed structure to ensure the structural strength of the first fixing frame 21; the first fixing section 211 is connected to the yaw system, and the second fixing section 212 can be connected to the second fixing frame 22 by locking members such as bolts, or by a snap-on structure, which is not limited here.

[0058] In an embodiment of the present invention, a plurality of reinforcing ribs are disposed at the connection between the first fixing section 211 and the second fixing section 212 .

[0059] In this embodiment, a plurality of reinforcing ribs are provided at the connection between the first fixing section 211 and the second fixing section 212 to enhance the deformation resistance of the first fixing frame 21 and prevent the first fixing frame 21 from bending and deforming under long-term use, thereby affecting the meshing degree between the lubrication gear 10 and the yaw gear.

[0060] In an embodiment of the present invention, the second fixing section 212 is connected to the second fixing frame 22 by using an external hexagonal bolt rod, and a part of the structure of the external hexagonal bolt rod passes through the second fixing frame 22 .

[0061] In this embodiment, both ends of the hexagonal bolt rod pass through the second fixing section 212 and the second fixing frame 22, and at the same time, part of the structure of the hexagonal bolt rod passes through the second fixing frame 22, and then a nut is used to lock the second fixing frame 22 on the side of the second fixing frame 22 facing away from the second fixing section 212 to facilitate disassembly and assembly of the lubrication gear 10.

[0062] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lubrication device for a wind turbine generator set, applied to a yaw gear of a yaw system of a wind turbine generator set, characterized in that: The lubrication device of the wind turbine generator set comprises: An oil circuit distributor, the oil circuit distributor comprising an oil inlet and an oil outlet connected to the oil inlet, the oil inlet being connected to an automatic lubrication and grease pump of the wind turbine generator set through a pipeline; A lubricating gear (10), the lubricating gear (10) comprising an oil inlet hole (10a) and an oil outlet hole (10b) connected to the oil inlet hole (10a); the oil inlet hole (10a) is connected to the oil outlet through a pipeline, and the lubricating gear (10) can mesh with the yaw gear; and a gear fixing frame (20), the gear fixing frame (20) having a clearance space (20A) capable of accommodating the lubricating gear (10), the lubricating gear (10) being detachably connected to the gear fixing frame (20); one side of the gear fixing frame (20) being connected to the yaw system of the wind turbine generator set; The lubrication device of the wind turbine generator set has a lubrication state. In the lubrication state, the lubrication gear (10) rotates along with the yaw system, and the lubrication grease of the automatic lubrication and grease pump flows evenly onto the tooth surface of the yaw gear through the oil outlet hole (10b) of the lubrication gear (10).

2. The lubrication device for a wind turbine generator set according to claim 1, characterized in that: The lubrication gear (10) comprises a first gear (11) and a second gear (12), wherein any two adjacent first gears (11) are sandwiched with a second gear (12), and the oil inlet hole (10a) is arranged on one side of the first gear (11) and close to the tooth top of the second gear (12).

3. The lubrication device for a wind turbine generator set according to claim 2, characterized in that: The first gear (11) and the second gear (12) are both plastic gears.

4. The lubrication device for a wind turbine generator set according to claim 3, characterized in that: A meshing reinforcement layer is provided on the surface of the second gear (12).

5. The lubrication device for a wind turbine generator set according to claim 3, characterized in that: The tooth width of the first gear (11) is greater than the tooth width of the second gear (12).

6. The lubrication device for a wind turbine generator set according to claim 2, characterized in that: The first gear (11) and the second gear (12) are identically arranged, and the pitch circle diameters of the first gear (11) and the second gear (12) are set to d, and d is 160 mm; The tooth root height of the first gear (11) and the second gear (12) is set to 23.5 mm; and The tooth addendum height of the first gear (11) and the second gear (12) is set to 21 mm.

7. The lubrication device for a wind turbine generator set according to claim 1, characterized in that: The gear fixing frame (20) comprises a first fixing frame (21) and a second fixing frame (22); the first fixing frame (21) is screwed to the second fixing frame (22); the second fixing frame (22) has the avoidance space (20A); the first fixing frame (21) can be screwed to the yaw system, and the second fixing frame (22) is screwed to the lubrication gear (10).

8. The lubrication device for a wind turbine generator set according to claim 7, characterized in that: The first fixing frame (21) comprises a first fixing section (211) and a second fixing section (212); the first fixing section (211) and the second fixing section (212) enclose a clearance space (21A), and the second fixing frame (22) is located in the clearance space (21A); the first fixing section (211) is connected to the yaw system, and the second fixing section (212) is detachably connected to the second fixing frame (22).

9. The lubrication device for a wind turbine generator set according to claim 8, characterized in that: A plurality of reinforcing ribs are provided at the connection between the first fixing section (211) and the second fixing section (212).

10. The lubrication device for a wind turbine generator set according to any one of claims 8 to 9, characterized in that: The second fixing section (212) is connected to the second fixing frame (22) by using an external hexagonal bolt rod, and a part of the structure of the external hexagonal bolt rod passes through the second fixing frame (22).

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