CN219012776U - Main transmission system of wind turbine generator and wind turbine generator - Google Patents
Main transmission system of wind turbine generator and wind turbine generator Download PDFInfo
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- CN219012776U CN219012776U CN202223385950.XU CN202223385950U CN219012776U CN 219012776 U CN219012776 U CN 219012776U CN 202223385950 U CN202223385950 U CN 202223385950U CN 219012776 U CN219012776 U CN 219012776U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a main transmission system of a wind turbine and the wind turbine, the main transmission system comprises a transition flange and a gear box, the transition flange comprises an upwind side flange structure connected with an impeller and a downwind side flange structure connected with the input end of the gear box, the output end of the gear box is connected with a generator, the gear box comprises a box body, a primary planetary gear system structure and a main bearing, the primary planetary gear system structure and the main bearing are all arranged in the box body, the outer ring of the main bearing is connected with the box body, the inner ring of the main bearing is connected with the upwind side of a planet carrier of the primary planetary gear system structure, and the main bearing is a three-row cylindrical roller bearing. According to the utility model, the main bearing is arranged in the gear box, so that a main shaft of a traditional wind turbine generator is eliminated, the axial size of a main transmission system of the wind turbine generator is small, the structure is more compact, and the weight is lighter; meanwhile, the influence of the deformation of the main shaft of the high-power wind turbine generator on the tooth-shaped engagement of the gear box is solved, the bearing capacity of the gear box is improved, and the service life of the gear box is prolonged.
Description
Technical Field
The utility model relates to the technical field of wind power generation, in particular to a main transmission system of a wind turbine generator and the wind turbine generator.
Background
With the continuous increase of the single-machine capacity of the wind generating set, the diameter of the wind wheel of the fan is larger and larger. Long blades and high towers have become the mainstream of development due to good economy. As the blades are longer and the single machine power is larger, the load of the main bearing of the wind turbine generator is larger and the requirement is higher. Meanwhile, the main bearing and the gear box of the wind turbine are used as the most critical components of a transmission chain of the wind turbine, the reliability requirement is very high, the conventional main transmission system of the wind turbine is more and more difficult to meet the matching design of a high-power wind turbine aiming at the design of the main bearing and the gear box, and the design of the novel main transmission system with reliability and high bearing capacity has important significance for the design and application of the high-power wind turbine.
In order to meet the requirements of the long-blade high-power wind turbine on the main bearing and the gearbox transmission system, the main scheme at present comprises the following steps: the first scheme is that a traditional wind power gear box is adopted, a main shaft and two single-row conical main bearings are matched, a gear box primary gear ring is provided with a support bearing, the scheme is high in system cost, the requirement on pairing design play and operation play of the single-row conical bearings is very high, the installation is difficult, the service life of the bearing is greatly affected by the use environment, and the service life cannot be guaranteed. In a second scheme, the compact structure is realized, two single-row conical main bearings support a main shaft, the main shaft is rigidly and directly connected with a gear box, the front end of a first-stage planet carrier of the compact gear box is provided with no support bearing, and a first-stage gear ring of the gear box is connected with a main bearing seat. This solution is relatively low cost compared to the first solution, but the main bearing problem still remains. In addition, due to the problems of longer main shaft size and bearing rigidity, the deformation of the primary planet carrier of the integrated gearbox leads to unbalanced load of the planet wheel, the gear is modified or the flexible pin of the planet wheel is deformed to compensate the tooth surface meshing deviation caused by the deformation of the whole system, the technology of the scheme is immature at present, the design and manufacturing difficulty of the gear system are larger, and the technical risk is larger. In the third scheme, the main bearing and the main shaft of the wind turbine generator are integrated with the gear box, the front end bearing of the gear box planet carrier adopts a large-cone-angle double-row conical bearing, the scheme solves the problem that the large-cone-angle double-row conical bearing is applied to the semi-direct-drive wind turbine generator at present, and the large-cone-angle double-row conical bearing in the scheme has higher requirements on the clearance design, is limited by the bearing capacity and the size limitation of the large-cone-angle double-row conical bearing, and is not applied to the high-power generator at present.
In summary, the main transmission system of the existing high-power wind turbine generator has the defects of insufficient bearing capacity of a first-stage planet carrier bearing of a gear box, high use risk, poor gear precision, poor adaptability and the like. Therefore, a new main transmission system of a wind turbine generator is needed, which can provide high bearing capacity and high reliability, and ensure the economical efficiency of the fan while meeting the operation safety of a high-power fan.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above-mentioned problems, according to a first aspect of the present utility model, there is provided a main drive system of a wind turbine, the main drive system comprising a transition flange and a gear box, the transition flange comprising an upwind side flange structure connected with an impeller and a downwind side flange structure connected with an input end of the gear box, an output end of the gear box being connected with a generator, the gear box comprising a housing, a primary planetary gear system structure and a main bearing, both the primary planetary gear system structure and the main bearing being arranged in the housing, an outer ring of the main bearing being connected with the housing, an inner ring of the main bearing being connected with an upwind side of a planet carrier of the primary planetary gear system structure, the main bearing being a three row cylindrical roller bearing.
Optionally, the transition flange comprises a tapered section tapering from an upwind side to a downwind side such that a radial dimension of the downwind side flange structure is smaller than a radial dimension of the upwind side flange structure.
Optionally, the upwind side of the planet carrier of the first-stage planetary gear system structure is provided with a first step part matched with the inner ring of the main bearing, the end face of the first step part is provided with a first threaded hole extending along the axial direction, the inner ring of the main bearing is provided with a first through hole penetrating along the axial direction, the downwind side flange structure of the transition flange is provided with a fourth through hole penetrating along the axial direction, and the first threaded hole, the first through hole and the fourth through hole are matched, so that the transition flange and the inner ring of the main bearing are connected with the planet carrier of the first-stage planetary gear system through high-strength bolts.
Optionally, the main bearing and a gear inside the gear box share oil lubrication, and the gear box is provided with a forced lubrication oil path, and the forced lubrication oil path is communicated with a lubrication oil path of the main bearing.
Optionally, the gearbox further comprises a sealing end plate, wherein the sealing end plate and the outer ring of the main bearing are connected to the box body together through a high-strength bolt.
Optionally, the seal end plate comprises a first seal assembly engaged with the outer peripheral surface of the transition flange and a second seal assembly engaged with the windward side of the box.
Optionally, the transition flange comprises a tapered section tapering from an upwind side to a downwind side and a flat section maintaining a constant dimension in the axial direction, the first seal assembly being engaged with an outer peripheral surface of the flat section.
Optionally, the box body, the planet carrier of the primary planetary gear system structure, the transition flange and the sealing end plate together form an independent sealing cavity of the gear box, and the main bearing is located in the independent sealing cavity.
Optionally, the box is provided with a connecting arm connected with the main frame of the wind turbine, and the axial position of the main bearing is adjacent to or at least partially overlapped with the axial position of the connecting arm.
The utility model further provides a wind turbine generator system, which comprises the main transmission system.
According to the utility model, the main bearing is arranged in the gear box, and is simultaneously used as a support bearing of the planet carrier of the primary planetary gear system structure, so that the main shaft of the traditional wind turbine generator is eliminated, the inner rings of the three rows of cylindrical roller bearings serve as the main shaft, and the integrated gear box integrates the main shaft of the wind turbine generator, the main bearing of the wind turbine generator and the main gear box into a whole, so that the axial size of a main transmission system of the wind turbine generator is small, the structure is more compact, and the weight is lighter; meanwhile, the influence of the deformation of the main shaft of the high-power wind turbine generator on the tooth-shaped engagement of the gear box is solved, the bearing capacity of the gear box is improved, and the service life of the gear box is prolonged.
Drawings
The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to illustrate the devices and principles of the utility model. In the drawings of which there are shown,
FIG. 1 is a schematic diagram illustrating an assembly of a main drive system in a wind turbine according to an embodiment of the present utility model;
FIG. 2 is a schematic structural diagram of a main transmission system of a wind turbine according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a partial enlarged structure of a main transmission system of a wind turbine according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a partial enlarged structure of a main transmission system of a wind turbine according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a partial enlarged structure of a main transmission system of a wind turbine according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a partial enlarged structure of a main drive system of a wind turbine according to an embodiment of the present utility model.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.
In the following description, a detailed structure will be presented for the purpose of thoroughly understanding the present utility model. It will be apparent that the utility model is not limited to the specific details set forth in the skilled artisan. The preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to the detailed description, and should not be construed as limited to the embodiments set forth herein.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, as the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like are used herein for illustrative purposes only and are not limiting.
Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".
Hereinafter, specific embodiments of the present utility model will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present utility model and not limit the present utility model.
The utility model provides a main transmission system of a wind turbine and the wind turbine, as shown in fig. 1-6, the main transmission system comprises a transition flange 1 and a gear box 2, the transition flange 1 comprises an upwind side flange structure 11 connected with an impeller 3 and a downwind side flange structure 12 connected with the input end of the gear box 2, the output end of the gear box 2 is connected with a generator 4, the gear box 2 comprises a box body 21, a primary planetary gear system structure and a main bearing 22, the primary planetary gear system structure and the main bearing 22 are both arranged in the box body 21, an outer ring 221 of the main bearing 22 is connected with the box body 1, an inner ring 222 of the main bearing 22 is connected with the upwind side of a planet carrier 23 of the primary planetary gear system structure, and the main bearing 22 is a three-row cylindrical roller bearing.
The main bearing 22 is a main bearing of a main transmission system of the wind turbine, and is used for bearing rotating parts of the main transmission system of the wind turbine, including the impeller 3 and the transition flange 1; three rows of cylindrical roller bearings are adopted as the main bearing, wherein two rows of rolling bodies arranged along the radial direction mainly bear axial force, and the other row of rolling bodies arranged along the axial direction mainly bear radial force, so that the bearing capacity of the main bearing can be greatly improved; and because of the characteristic of the three rows of cylindrical roller bearings, the installation clearance of the three rows of cylindrical roller bearings is not needed to be considered when the main shaft bearing assembly is carried out, so that the installation is more convenient and the reliability is higher.
According to an embodiment of the utility model, as shown in fig. 2-4, the transition flange 1 comprises a tapering section 13 tapering from the windward side to the leeward side such that the radial dimension of the leeward side flange structure 12 is smaller than the radial dimension of the windward side flange structure 11. This arrangement enables the main bearing and other gearbox components located downwind of the transition flange to be reduced in size, thereby reducing the weight of the overall main drive train.
According to an embodiment of the present utility model, as shown in fig. 2, the gear case 2 further includes a single row cylindrical roller bearing 24, an outer ring of the single row cylindrical roller bearing 24 is connected to the case 21, and an inner ring of the single row cylindrical roller bearing 24 is connected to a leeward side of the planet carrier 23 of the primary planetary gear system structure. The main bearing 22 is used together with a single row cylindrical roller bearing 24 as a support bearing for a planet carrier 23 of a primary planetary gear system.
According to an embodiment of the utility model, the main bearing 22 shares oil lubrication with the gears inside the gearbox. The main bearing 22 adopts forced lubrication, as shown in fig. 3 and 6, the gear case 2 is provided with a forced lubrication oil path 25, the forced lubrication oil path 25 communicates with a lubrication oil path 223 of the main bearing 22, and the lubrication oil path 223 may be provided in an outer ring 221 of the main bearing 22 so that lubrication oil reaches rolling bodies of the main bearing 22 via the forced lubrication oil path 25 and the lubrication oil path 223. Preferably, the forced lubrication oil passage 25 is partially externally provided to the case 21, facilitating installation and maintenance, and simplifying the processing process of the case 21. The main bearing and the gear inside the gear box share oil lubrication, a lubrication system is not required to be arranged independently, and the operation and the maintenance are convenient; the forced lubrication can ensure the lubrication effect of the main bearing.
According to the embodiment of the present utility model, as shown in fig. 5 and 6, the upwind side of the planet carrier 23 of the primary planetary gear system structure is provided with a first step 231, the planet carrier 23 is provided with a first threaded hole 232 extending in the axial direction from the end surface 231-1 of the first step 231, the inner ring 222 of the main bearing 22 is provided with a first through hole penetrating in the axial direction, the downwind side flange structure 12 of the transition flange 1 is provided with a fourth through hole 121 penetrating in the axial direction, and the first threaded hole 232, the first through hole and the fourth through hole 121 are matched, so that the transition flange 1 and the inner ring 222 of the main bearing 22 are connected to the planet carrier 23 of the primary planetary gear system structure together through a high strength bolt 5. Preferably, the outer circumferential surface 231-2 of the first step 231 is clearance fitted with the inner circumferential surface of the inner ring 222 of the main bearing 22.
According to an embodiment of the present utility model, as shown in fig. 2, 3 and 6, the gear box 2 further includes a sealing end plate 26, and the sealing end plate 26 and an outer ring 221 of the main bearing 22 are connected to the box 21 together by a high strength bolt 6. Preferably, the box 21 is provided with a second step portion 211, the box 21 is provided with a second threaded hole 212 extending along the axial direction from an end surface 211-1 of the second step portion 211, the outer ring 221 of the main bearing 22 is provided with a second through hole penetrating along the axial direction, the sealing end plate 26 is provided with a third through hole 261 penetrating along the axial direction, and the second through hole, the third through hole 261 and the second threaded hole 212 are matched, so that the sealing end plate 26 and the outer ring 221 of the main bearing 22 are connected with the box 1 together through a high-strength bolt 6.
According to a preferred embodiment of the present utility model, as shown in fig. 3, the seal end plate 26 includes a first seal assembly 262 and a second seal assembly 263, the first seal assembly 262 being engaged with the outer peripheral surface of the transition flange 1, and the second seal assembly 263 being engaged with the windward side of the tank 21. Specifically, the leeward side of the seal end plate 26 is provided with a third step portion that matches the windward side end face and the inner peripheral face of the case 21, and annular seals are provided on the end face and the outer peripheral face of the third step portion facing the case 21, respectively, which constitute the second seal assembly 263 of the seal end plate 26. In addition, the inner periphery of the sealing end plate 26 is provided with two annular seals engaging the outer peripheral surface of the transition flange 1, which constitute a first seal assembly 262 of the sealing end plate 26. By providing a first sealing assembly 262 of two annular seals between the sealing end plate 26 and the transition flange 1, the sealing effect of the connection of the sealing end plate 26 to the transition flange 1 is enhanced; and the sealing effect of the connection of the sealing end plate 26 with the case 21 is enhanced by providing the second sealing assembly 263 composed of two annular seals respectively located on different joint surfaces between the sealing end plate 26 and the case 21.
According to an embodiment of the utility model, the transition flange 1 further comprises a straight section 14 connected to the tapered section 13, the straight section 14 being dimensionally unchanged in the axial direction, the first sealing assembly 262 being engaged with the outer circumferential surface of the straight section 14. By arranging the portion of the transition flange 1 which is arranged in the sealing end plate 26 in a cylindrical shape, the sealing end plate 26 and the first sealing assembly 262 are correspondingly arranged in an annular shape, which is convenient for processing and ensures the sealing effect.
When the gear box is assembled, the main bearing 22 is sleeved on the first step part 231 of the planet carrier 23 from the windward side of the planet carrier 23 of the primary planetary gear system structure, so that the windward side end surface 221-1 of the outer ring 221 of the main bearing 22 is abutted against the end surface 211-1 of the second step part 211 of the box body 21, while the windward side end surface 222-1 of the inner ring 222 of the main bearing 22 is abutted against the end surface 231-1 of the first step part 231 of the planet carrier 23, the first through hole of the inner ring 222 of the main bearing 22 is aligned with the first threaded hole 232 of the planet carrier 23, the second through hole of the outer ring 221 of the main bearing 22 is aligned with the second threaded hole 212 of the box body 21, and the lubricating oil duct 23 of the main bearing 2 is aligned with the forced lubricating oil path 5 of the gear box so as to be kept in communication; the seal end plate 26 and the outer ring 221 of the main bearing 22 are commonly connected to the housing 21 by the high strength bolts 6 such that the second seal assembly 263 of the seal end plate 26 is tightly engaged with the windward side of the housing 21; the transition flange 1 is then nested into the annular seal end plate 26 until the end face 122 of the leeward flange structure 12 of the transition flange 1 abuts the windward end face 222-2 of the inner ring 222 of the main bearing 22, the fourth through hole 121 of the transition flange 1 is aligned with the first through hole of the inner ring 222 of the main bearing 22, and the first seal assembly 262 of the seal end plate 26 is in tight engagement with the outer peripheral surface of the flat section 14 of the transition flange 1; the transition flange 1 and the inner ring 222 of the main bearing 22 are jointly connected to the planet carrier 23 of the primary planetary gear system structure by means of high-strength bolts 5.
According to the embodiment of the present utility model, the windward side end surface 233 of the planet carrier 23 of the primary planetary gear system structure serves as the front end surface of the gear box, and the first step 231 for placing the main bearing 22 is opened from the windward side end surface 233, so that the main bearing 22 can be directly sleeved on the planet carrier 23 from the windward side of the planet carrier 23, and the main bearing can be conveniently installed. In addition, on the upwind side of the main bearing 22, the outer ring 221 and the inner ring 222 are connected with the seal end plate 26 and the transition flange 1, respectively, and the first seal assembly 262 of the seal end plate 26 is tightly engaged with the transition flange 1, and the second seal assembly 263 of the seal end plate 26 is tightly engaged with the housing 21, so that the housing 21, the carrier 23 of the primary planetary gear system structure, the transition flange 1 and the seal end plate 26 together form an independent seal cavity of the gear box in which the main bearing 22 is located. The independent sealed cavities form a common oil lubrication environment for the main bearing and the gears inside the gearbox.
According to an embodiment of the utility model, the housing 21 is provided with a connecting arm 213 connected to the main frame of the wind turbine, the axial position of the main bearing 22 being adjacent to or at least partially coincident with the axial position of the connecting arm 213. The main bearing 22 carries the unit rotating parts including the impeller 3 and the transition flange 1, the torsion moment is large, and the axial position of the main bearing 22 is set to be similar to the axial position of the connecting arm 213, so that the stress balance of the gear box is ensured.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "part," "member" and the like as used herein can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present utility model, which fall within the scope of the claimed utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The main transmission system of the wind turbine generator system is characterized by comprising a transition flange and a gear box, wherein the transition flange comprises an upwind side flange structure connected with an impeller and a downwind side flange structure connected with an input end of the gear box, an output end of the gear box is connected with a generator, the gear box comprises a box body, a primary planetary gear system structure and a main bearing, the primary planetary gear system structure and the main bearing are arranged in the box body, an outer ring of the main bearing is connected with the box body, an inner ring of the main bearing is connected with an upwind side of a planet carrier of the primary planetary gear system structure, and the main bearing is a three-row cylindrical roller bearing.
2. The main drive system of claim 1, wherein the transition flange comprises a tapered section that tapers from an upwind side to a downwind side such that a radial dimension of the downwind side flange structure is less than a radial dimension of the upwind side flange structure.
3. The main transmission system according to claim 1, characterized in that the upwind side of the planet carrier of the primary planetary gear system structure is provided with a first step portion matching with the inner ring of the main bearing, the end face of the first step portion is provided with a first threaded hole extending in the axial direction, the inner ring of the main bearing is provided with a first through hole penetrating in the axial direction, the downwind side flange structure of the transition flange is provided with a fourth through hole penetrating in the axial direction, the first threaded hole, the first through hole and the fourth through hole are matched, so that the transition flange and the inner ring of the main bearing are connected with the planet carrier of the primary planetary gear system together through high-strength bolts.
4. A main drive system according to claim 1, wherein the main bearing shares oil lubrication with a gear inside the gearbox, the gearbox being provided with a forced lubrication oil circuit communicating with a lubrication oil channel of the main bearing.
5. The main drive system of claim 1, wherein the gearbox further comprises a seal end plate that is commonly connected to the housing with the outer race of the main bearing by a high strength bolt.
6. The main drive system of claim 5, wherein the seal end plate includes a first seal assembly engaged with an outer peripheral surface of the transition flange and a second seal assembly engaged with an upwind side of the box.
7. The main drive system of claim 6, wherein the transition flange includes a tapered section that tapers from a windward side to a leeward side and a flat section that remains unchanged in size in the axial direction, the first seal assembly engaging an outer peripheral surface of the flat section.
8. The main drive system of claim 5, wherein the housing, the planet carrier of the primary planetary gear train structure, the transition flange, and the seal end plate together form a separate seal cavity of the gearbox, the main bearing being located in the separate seal cavity.
9. A main drive system according to any one of claims 1 to 8, wherein the housing is provided with a connection arm connected to the main frame of the wind turbine, the axial position of the main bearing being adjacent to or at least partially coincident with the axial position of the connection arm.
10. Wind power plant, characterized in that it comprises a main drive system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223385950.XU CN219012776U (en) | 2022-12-13 | 2022-12-13 | Main transmission system of wind turbine generator and wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223385950.XU CN219012776U (en) | 2022-12-13 | 2022-12-13 | Main transmission system of wind turbine generator and wind turbine generator |
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| Publication Number | Publication Date |
|---|---|
| CN219012776U true CN219012776U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223385950.XU Active CN219012776U (en) | 2022-12-13 | 2022-12-13 | Main transmission system of wind turbine generator and wind turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219012776U (en) |
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2022
- 2022-12-13 CN CN202223385950.XU patent/CN219012776U/en active Active
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